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Chicago Debates Merits of ShotSpotter Technology

theodp writes "After a week that saw more than 40 people shot and at least 4 killed, Chicago politicians and police are at odds on whether to implement ShotSpotter, a camera and acoustic sensor-based gunshot-location system that is designed to pinpoint a shooter's location within seconds. The Chicago Police Department opposes such a move, saying ShotSpotter wasn't reliable in an earlier trial and — at $250,000 for a square mile of coverage — is too expensive. The company says the system has dramatically lowered crime rates in cities across the country. ShotSpotter is currently deployed in two countries and 51 US cities and counties."

39 of 385 comments (clear)

  1. Listen to the police by kabloom · · Score: 4, Insightful

    Well, if the Chicago police are saying "we tried it and it doesn't work", I'd listen to them rather than the company.

    1. Re:Listen to the police by Anonymous Coward · · Score: 5, Interesting

      You gotta understand the police mentality. They resist any kind of change, more so if it's going to make them busy and even more if it'll get them in trouble. Picture highschool, if you will. Remember the jocks on the football team? By and large, it's the same mentality.

      I implemented a software project for a police department. I did my homework, fully vetted the system. I had limited trials and corrected what needed to be corrected. Come deployment, not a single officer used it. After months of work, the project was canned because the offers had "tried it and it didn't work". Aside from my early adopters ( the ones who had used it while it beta so I could squash any last minute bugs ), not a single officer had logged in to the system.

      Later I find out that they were upset that they weren't getting their 12% annual contract raise, and because the software had cost something on the order of 10,000, they were boycotting it for dick-swinging reasons. These aren't the kind of people I would base any decision on.

      That said, it speaks more that the politicians do want this system. That'd be enough to terminate any project as far as I am concerned.

    2. Re:Listen to the police by zippthorne · · Score: 4, Insightful

      Indeed. Unless it's a union ploy and it really does work.

      In which case, $250k per square mile doesn't really seem that bad to me, though, assuming it's the one-time installation fee and not a yearly operational cost. That's 640 acres, and at Chicago's population density of 12k per square mile means the system only costs $20 per "covered" resident.

      --
      Can you be Even More Awesome?!
    3. Re:Listen to the police by plover · · Score: 4, Insightful

      Well, if the Chicago police are saying "we tried it and it doesn't work", I'd listen to them rather than the company.

      I doubt the police have the most informed opinion. RTFA, the city didn't even hook it into the 911 call center, the way the successful cities did.

      My guess is the police are looking at the $250,000/square mile cost and saying "We could put 4 more officers on the street for that money." Never mind the misunderstanding of the difference between up front and ongoing costs.

      Basing a decision on a flawed study and the opinions of someone who believes they will financially suffer is not a recipe for a good result.

      --
      John
    4. Re:Listen to the police by maroberts · · Score: 3, Interesting

      I suspect that as the police might be on the receiving end of some of those fired shots, they would be unlikely to be opposed to a system which worked reliably. If the system was not installed or operated correctly then there is probably some blame attached to the company for not offering the correct support to ensure these went smoothl

      --

      Donte Alistair Anderson Roberts - hi son!
      Karma: Chameleon

    5. Re:Listen to the police by lorenlal · · Score: 3, Insightful

      Bitterness: High
      Anecdotal: Much
      Citations: Needed

      I'll believe that you did the work you claim. Even the best software fails for reasons beyond the developers' control. But to claim that it was from 'dick-swinging' sounds... well.. petty and bitter. Especially since the statement started with "Later I find out..."

      Pretty much, you're bitter from hearsay... And you're pissed that they cut your project because of lack of adoption. Sorry. But don't take it out on *all* cops.

      As an IT guy, I'm pretty used to broad generalizations, and I'm pretty used to being on the wrong side of many of them.

    6. Re:Listen to the police by DrVxD · · Score: 4, Interesting

      Interesting point - but I suspect it's actually to the converse of what you're suggesting.

      Consider - the police will (generally) have localised those shots that are being fired at them - so this system makes little difference in that case. However, what it will do is locate other gunshots - which the police will then have to respond to (and thus putting themselves in the firing line)

      --
      Not everything that can be measured matters; Not everything that matters can be measured.
    7. Re:Listen to the police by plover · · Score: 4, Insightful

      What good would a system telling you where the shot came from do if the officer is the one being shot? I.e., there already?

      These were originally developed for the military to identify the location of a sniper. If you were on the ground looking for a gunman you couldn't see, you'd damn well appreciate a system like this.

      --
      John
    8. Re:Listen to the police by causality · · Score: 3, Insightful

      Indeed. Unless it's a union ploy and it really does work.

      In which case, $250k per square mile doesn't really seem that bad to me, though, assuming it's the one-time installation fee and not a yearly operational cost. That's 640 acres, and at Chicago's population density of 12k per square mile means the system only costs $20 per "covered" resident.

      If this system is deployed, I predict that silencers and/or ballistic knives will become popular on Chicago's black market. If there weren't already such well-known, low-tech devices that can defeat this system, I might consider its merits. I wish we'd embrace good old-fashioned police work instead of trying to find technological shortcuts around it. These arms-race scenarios are only one reason I feel that way.

      If we really wanted to reduce crime, we'd legalize the personal use of drugs by adults, release all of the non-violent drug offenders, and use the (tremendous amount of) extra jail space for violent criminals. We'd have more honor that way too, if we only used police to go after criminals who hurt others and stopped using them to tell adults what they may ingest. Unlike the ShotSpotter system, this would both reduce crime and save money.

      --
      It is a miracle that curiosity survives formal education. - Einstein
    9. Re:Listen to the police by Broken+scope · · Score: 4, Informative

      Police in the United States are not required to respond to anything.

      --
      You mad
    10. Re:Listen to the police by Broken+scope · · Score: 5, Informative

      Warren v. District of Columbia.
      http://en.wikipedia.org/wiki/Warren_v._District_of_Columbia

      Castle Rock v. Gonzales
      http://en.wikipedia.org/wiki/Castle_Rock_v._Gonzales

      As loath as I am to link to this site, it gives a very good explanation.
      http://www.firearmsandliberty.com/kasler-protection.html

      --
      You mad
    11. Re:Listen to the police by causality · · Score: 3, Insightful

      If this system is deployed, I predict that silencers and/or ballistic knives will become popular on Chicago's black market. If there weren't already such well-known, low-tech devices that can defeat this system, I might consider its merits. I wish we'd embrace good old-fashioned police work instead of trying to find technological shortcuts around it. These arms-race scenarios are only one reason I feel that way.

      Silencers don't work in real life the way they do in the movies. There is still a pretty loud bang. So what makes you think this technology won't work with silencers?

      If we really wanted to reduce crime, we'd legalize the personal use of drugs by adults, release all of the non-violent drug offenders, and use the (tremendous amount of) extra jail space for violent criminals. We'd have more honor that way too, if we only used police to go after criminals who hurt others and stopped using them to tell adults what they may ingest. Unlike the ShotSpotter system, this would both reduce crime and save money.

      Seems to me, this system is designed "to go after criminals who hurt others". You are contradicting yourself.

      I'm aware that silencers aren't perfect. The point was not whether there is a loud bang. The point is whether the designers of this system were expecting such a countermeasure, and whether their system can pick up muffled gunshots as easily as any other. If it can, are there false positives every time an engine backfires, or someone lights a firecracker, or any number of things that can make sudden loud noises? Even if they can perfectly account for all of those things with 100.0000% accuracy, why wouldn't criminals switch to using other weapons? Right now they use guns because they are a convenient way to present deadly force. If they became a lot less convenient, it's logical they would use something else. These questions need serious, evidence-backed answers before it's reasonable to invest hundreds of thousands of dollars in them.

      My point is that if two gangs fight over turf, or if someone wants to murder, a system like this might determine the choice of weaponry. It would not determine whether the deed is done. Please explain how I contradict myself by wanting an effective way to stop violent criminals instead of wanting a less effective way (I get the funny feeling you won't try to explain that one). "You contradict yourself" isn't the fatal objection you imagine it to be when you can't back it up with something substantial. Comments on argumentation aside, when we need to go after criminals who hurt others, we have police officers for that. Those officers would have a lot more available manpower and jailspace if we stopped prosecuting personal drug use. I think that's a much better long-term solution than relying on a single technical measure that invites the creation of countermeasures.

      --
      It is a miracle that curiosity survives formal education. - Einstein
    12. Re:Listen to the police by gad_zuki! · · Score: 3, Informative

      I live in Chicago and read quite a bit about the policing system and policies here and I fully agree with your assessment.

      The police force needs to be seen as blue-collar guys who are most interested in their union and their own paycheck first than any kind of systemic change. I read a couple of policeman's blogs and its interesting to see how they oppose the existing camera system. Their big beef is that if this stuff costs money than thats money that can be used on raises, better perks, and more detectives.

      While I dont know how well this system works, I do know that the CPD is biased and the assessment should come from a third party that is not affiliate with any union.

      That said, the cost isn't low, but you'll only need it in some parts of the south side and some parts of the west side (garfield park, west humboldt park). I live in a neighborhood that borders Humboldt park and see some pretty bad things now and again. Chicago is in the middle of a crime/gang epidemic and we need new ideas and new technologies. Doubly so in areas where residents have bought into a 'dont snitch' philosophy and refuse to report crime to the police or answer any questions when they have been vicitiized, because of fear of gang retaliation. Cameras and microphones dont fear 'dont snitch'.

    13. Re:Listen to the police by Anonymous Coward · · Score: 3, Informative

      Holly fucking shit, Fuck this country. I just lost a lot of what little respect I had left for America.

    14. Re:Listen to the police by Anonymous Coward · · Score: 3, Insightful

      I'm... I'm shocked, really.

      Maybe is because I'm European and the concept of self-defence is so alien to us, but the idea of police forces not being liable for leave you in the cold with no protection whatsoever, more so when an alert call has been made... it's frightening.

    15. Re:Listen to the police by Jah-Wren+Ryel · · Score: 4, Insightful

      I've had quite a lot of interaction (non-adversarial) with Chicago cops in that time.

      What would you expect? You are directly helping them. The worst thing someone in your position is likely to witness is maybe some 'locker-room talk' about some crazy shit they got away with that no regular citizen could ever get away with. But that's only going to happen if the cop is blindly arrogant or if they think that you are "one of them." Otherwise, any cop with even half a brain is going to keep his mouth shut.

      I'm not saying all cops are bad; I'm just saying your anecdote is, at best, no more convincing than the AC you responded to and probably somewhat less since he did find himself thrust into an adversarial interaction with the police union, although he didn't realize until afterward.

      --
      When information is power, privacy is freedom.
    16. Re:Listen to the police by gmhowell · · Score: 5, Insightful

      But don't take it out on *all* cops.

      The troublesome 99% of cops sure do make the rest look bad.

      --
      Jesus was all right but his disciples were thick and ordinary. -John Lennon
  2. What's the variance? by TheStatsMan · · Score: 4, Insightful

    ...and with it shall go the supposed evidence. The paltry statistic of 244 gunshots in a two month period vs. 177 in another does not indicate anything about supposed trends in gun crime. Furthermore, yearly gun crime is what is of importance, not a few weeks.

  3. Re:Or... by Scutter · · Score: 5, Informative

    Or we could have reasonable gun control laws.

    Guns are already illegal within the Chicago city limits. Guess those "reasonable gun control laws" aren't quite working out like you'd hoped, huh?

    --

    "Tell me doctor, with all of your defenses, are there any provisions for an attack by killer bees?"
  4. I'm all for this by Z8 · · Score: 4, Funny

    Anything that increases compound bow or crossbow homicides can't be bad.

  5. works in Boston by SuperBanana · · Score: 4, Interesting
    I regularly see news stories in Boston where the police get a shotspotter alert, show up, find a guy bleeding out on the sidewalk, and sometimes they find him fast enough to call EMS and get him to a hospital and save his life.

    I don't think they should have cameras, but the technology is sound- and it certainly is better use of tax money than where most money is going (all sorts of anti-terrorism crap.) The question: why is such a simple technology so hideously expensive? There should be little patentable in the field, given how old and obvious sonic triangulation is. The equipment is super simple- an embedded computer in an outdoor enclosure with a microphone...

    1. Re:works in Boston by bmo · · Score: 4, Informative

      Please explain why they should not have cameras, especially when almost every city in the United States have laws against discharging fire arms within city limits?

      Because in the UK, the home of the highest number of cameras per capita, the technology has not helped one bit. Crime is not down, and the cameras are used instead to look into peoples' windows (as been documented more than once). Cameras are an excuse for the flatfoots to get flat asses from sitting around all day.

      In other words, impracticality and blatant misuse as entertainment.

      That's why.

      That's totally ignoring any sociological/political argument which I will not go into here because it will be like pissing into an ocean of piss.

      --
      BMO

  6. Implement and everyone wins! by BigSlowTarget · · Score: 4, Informative

    Charge $300,000 per sq mile and kick $50k back to the police department for 'overtime related to training and special classes.' Don't monitor if the classes are performed or even necessary. Don't check if the system is used after implementation.

    The police get funding - they win. The company gets cash - they win. The politicians get to look like they're doing something using cutting edge technology against crime which they can feature in their next election - they win.

    It's the perfect solution! No one who matters (in the mind of our leaders) gets hurt.

  7. We have it in Rochester, NY by purduephotog · · Score: 4, Interesting

    It works great, or so I'm told. They're able to get cops to where the shooter fired within minutes- and in plenty of time to round up witnesses who swear they "saw nuttin".

    There's been at least one drive by in my 'work' neighborhood, and about a dozen+ deaths within a mile. Two bullets in our building. One in the front door within 5 minutes of me entering it (now THAT will freak you out- come into work, forget something, go back to the car and the door has been shot).

  8. Re:Or... by zoney_ie · · Score: 3, Insightful

    Kind of meaningless without national controls, it's not like this can be controlled at the city limits in the way a national border is maintained (and even that isn't entirely successful).

    Plus even with national controls you would need decades of strict enforcement to see a difference.

    --
    -- *~()____) This message will self-destruct in 5 seconds...
  9. listen to scientists by SuperBanana · · Score: 4, Insightful

    Well, if the Chicago police are saying "we tried it and it doesn't work", I'd listen to them rather than the company.

    Police aren't unbiased either. If a tool (or effective policing) pushes crime out of an area, you don't need as many police officers in that area, do you? And if it works in one part of the city, it'll probably work in others. That means layoffs. Let me know when you hit that stage of your life where you realize that the police have little incentive to effectively enforce the law.

    Sorta similar to firefighters. Fire calls have dropped in the last 20-30 years to 1/4 of what they used to be; more sprinkler systems, better building and electrical codes, etc. We just don't need nearly as many firefighters these days. So rather than lay off firefighters (or reassign them to work in small rescue crews, or in ambulances as rescue techs) the city of Boston now sends out in many cases TWO fire trucks to any medical or vehicle crash call, putting unnecessary miles on expensive heavy equipment and running up fuel bills.

    But, they get to look busy...

  10. How is it at handling silencers? by jcr · · Score: 4, Insightful

    Let's see... $250 grand per square mile. What's it cost to obtain a silencer from the friendly neighborhood gun dealer?

    After a dozen or so people get caught with this technology, I give it about a year before all the gangs in chicago start using silencers as standard equipment.

    -jcr

    --
    The only title of honor that a tyrant can grant is "Enemy of the State."
  11. Re:Here's a radical idea by Theodore · · Score: 5, Insightful

    Not quite...
    In Illinois, if you even want to TOUCH a gun, you need a FOID card (firearms owner ID).
    In Chicago, all firearms must be registered, and no handguns can be registered after some date in 1982-ish (basically, you can have a shotgun or rifle, but can't own a pistol).
    Open and concealed cary are basically banned in IL, unless you are retired police (in other words, Drew Peterson could conceal carry, but R. Lee Ermey couldn't).

    All these restrictions are unconstitutional. Period.

    I _DARE_ mayor Daley to produce copies of the perpetrators' FOID cards, and the registration of their firearms.
    What's that? They don't have one?
    Well, I for one am SHOCKED that someone who would shoot at another human being just because they felt like it, wouldn't at least make sure they could legally do so.
    (Heavy sarcasm there).

    As for the shotspotter system, I remember seeing examples of this about 12-15 years ago; it was highly touted for a bit, then kinda dissappeared...
    It was combined with all the police cameras that were going up back then (just in bad neighborhoods, we swear... sorry, but now EVERY neighborhood is a bad one, so we need cameras everywhere).
    The last part is not an exaggeration... next time you go through Chicago, look for little blue blinking LEDs on the lampposts... then ask yourself who won the cold war.

  12. Re:Or... by rubycodez · · Score: 3, Insightful

    you link to a lie, propaganda by the Bureau of International Narcotics and Law Enforcement Affairs that has been debunked. Only 17% of Mexican guns confiscated were traceable at all, the others were from non-US foreign countries and without means of tracing. But you believe the anti-guns lies of a U.S. agency because it suits your anti-gun bias.

    The high murder rates in the U.S.A. occur in areas with subcultures that have breakdown of family structure. No father to raise and keep young males in line means a sufficient number of them act as savages to turn a neighborhood into a lawless war zone.

    That has nothing to do with gun ownership by normal law-abiding citizens, you rabid anti-gun nuts need to stop implying I or people like me will act as lawless savages with our guns because other groups of people have not the maturity or respect for human life to be trusted with the means to defend themselves.

  13. Re:Or... by bmo · · Score: 3, Insightful

    "Meanwhile, France and the UK and most of continental Europe do enforce gun control laws"

    And meanwhile you *still* get situations like biker gangs in Denmark going at each other with shoulder fired AT4-HEAT antitank grenades.

    Contrast and compare to Switzerland - an entire country that is armed to the teeth in every house across the land, and there isn't mayhem.

    Gun control laws do absolutely nothing to stem violence, a fact that anti-gun people tend to ignore.

    --
    BMO

  14. Re:Or... by theLOUDroom · · Score: 5, Insightful

    You're missing the point.
    Gun control laws do nothing to stop criminals from carrying guns, but they do stop law abiding citizens from carrying guns.

    If I'm just a regular guy who wants to carry a gun for defense purposes, I'm not going to do it if it's illegal.
    If I'm planning to commit a felony with a gun, do I really care if having the gun itself is illegal?

    The idea of keeping guns out of the hands of criminals entirely is laughable.
    Handguns use 100 year old technology. Criminals want guns. It would be just as effective as prohibition:
    Someone will set up a shop in their basement and start cranking out illegal guns at $1000 each for a massive profit.
    That's if people don't take the easy route and smuggle them across the border.

    And this doesn't even get into the humans rights side of gun ownership, or the fact that it is guaranteed in our constitution and very much a part of our national philosophy.

    --
    Life is too short to proofread.
  15. Re:Or... by Anonymous Coward · · Score: 3, Insightful

    Contrast and compare to Switzerland

    That's because they're properly trained to use the guns while they do national service. You can hardly compare mass ex-military gun control to what we have where they're nothing more than penis extensions for morons and cowards.

  16. Re:Here's a radical idea by rubycodez · · Score: 4, Interesting

    my wife and her cousin were mugged in full view of police camera on Argyle street ("vietnamese town"), and the images from the camera on telephone pole were utterly useless. couldn't see under hat brim to see face, the perps know they can just keep their chin slightly down with a cap and they can rob, rape, and murder in camera shot. the percentage of crimes solved using those camera pictures is in the realm of statistical noise.

    Good decent people own guns in illinois and have their FOID card, but they aren't the ones doing drive by shooting or holding up liquor stores or banks. But that idiot hypocrite Mayor Daley, who relies on armed people for protection, says gun ownership by good decent law-abiding people (the ones who don't have guns in chicago right now) having the means to defend themselves would mean an explosion of crime. what a moron, both my brothers live in states that allow concealed carry, and in both their cities of residence the crime rate has plummeted.

  17. Re:Fix the real problem ? by Jaime2 · · Score: 4, Informative

    People killing people is a separate problem from firearms ubiquity. It is easy to legally purchase and carry a weapon in both Isreal and Switzerland, yet they don't have high gun crime rates. Every large survey of gun crime rates and gun control laws show very low correlation between the two.

  18. Re:Here's a radical idea by Low+Ranked+Craig · · Score: 5, Insightful

    No. That is a gross oversimplification. The point is that handguns are illegal in Chicago, yet last week there were 40 shootings. Let me repeat that. Last week there were 40 shootings in Chicago despite the fact that handguns are illegal in Chicago. This seems to me to be a good indication that gun control laws like those that Chicago has do not work. It's all very nice to say that gee, if we just outlawed guns then nobody would have them and no one would get shot, but last I checked, we don't live in a world populated with unicorns and faeries.

    You'd think that Chicago, of all places, would understand the implications of prohibition. When alcohol was illegal it still flowed underground. Why would the politicians expect that making guns illegal would make the m go away? In fact, from where I sit it has made the situation worse, because the law abiding citizen, following the law, has no gun, but the criminal, not giving a fuck about the law, does.

    Anecdotally, I live in a small town (approx' 20K people) in Arizona. More than half the population here has a handgun (I have 2), closer to 75% if you add rifles and shotguns. In the last 2 years there has been 2 murders, only one with a gun, and that involved a gang that chased someone and happened to catch up with them in our town.

    As I said, this is anecdotal, but in my personal current experience, a high proportion of gun ownership does not lead to more shootings. In fact, it seems to me that more guns, at least here, leads to lower crime overall, which suggests to me that socio-economic and cultural issues are the actual problem and not the presence of "too many guns"

    My overall point is that the gun issue is not as simple as a lot of gun control advocates would like to make them, and that in a city with strict gun control laws large numbers of shootings occur. In Chicago, with strict gun laws, the murder rate is 18 per 100,000 residents. In Phoenix, the murder rate is 10.5 per 100,000 residents, yet Chicago has a strict no-handgun law, and in Phoenix you can buy and carry a handgun with no permit. Since the murder rate in Chicago is 75% higher than Phoenix, I'd say that the laws in Chicago weren't working so good. http://en.wikipedia.org/wiki/United_States_cities_by_crime_rate

    --
    I still cannot find the droids I am looking for...
  19. Re:Here's a radical idea by couchslug · · Score: 4, Interesting

    "with the response time and technology of the police nowadays that section of your constitution doesnt make a whole lot of sense to me"

    WTF are you babbling about? Been watching too many cop shows methinks. :)

    Unless you live next door to a police station, response time is still "reaction time", not "intervention/interdiction/prevention".

    That means the cops show up to scrape your dead arse off the pavement if you lost the fight.

    In my case, I lived far enough out that the cops couldn't find my house for more than a half-hour. The white trash crackheads partying on my perimeter road told my wife (I was deployed at the time) to piss off when she asked them to leave. That they didn't do more is likely because she was carrying a 5.56 Ruger Mini-14. She returned to the house, put a few rounds into the ground (NOT horizontally, no one was in danger) where they couldn't see the impact area but we could dig up the bullets if required), and they left rapidly never to return.

    The sheriff was pleased, our neighbors ditto, and we got no more visitors. Beats going home to a fucked/dead wife and a looted house in my book.

    BTW, the US can't be peaceful because it is too culturally and economically diverse. American subgroups have nothing in common, so the only way to keep society reasonably peaceful is to contain the most violent by force. Even the Coalition allows Iraqi heads of household to have one full-auto battle rifle because it is necessary in order to avoid being a victim.

    --
    "This post is an artistic work of fiction and falsehood. Only a fool would take anything posted here as fact."
  20. Re:Or... by copponex · · Score: 3, Insightful

    Here in America, the right to own and bear arms is very much a deeply rooted ideal that stems from the founding of this country. It is statistically proven over and over that here in America, states and cities that allow their law abiding citizens to carry firearms have much lower crime rates than in states or cities that restrict gun ownership by law abiding citizens.

    I live in Atlanta, Georgia. I'm quite familiar with the standard issue backwater responses to gun control. Canada has even more guns per capita and less homicide rate due to their strict enforcement of gun laws. Same goes for most of Europe, Canada, Australia, and New Zealand.

    Local gun control policies don't work because they are local. It's like having a dry county. People are still going to drive a few miles and get liquor.

    Those who would give up essential liberties for a little temporary security deserve neither liberty nor security." - Benjamin Franklin

    Benjamin Franklin owned slaves, and the most modern gun technology during his day allowed a person to fire a round every twenty seconds. He had some good things to say, but treating the founding fathers with any sort of reverence would be something they abhorred, since most of them believed that dogmas are evil and that reason was the path to enlightenment.

  21. Re:Fix the real problem ? by jayveekay · · Score: 3, Insightful

    Motive, means, opportunity... All are required for murder. Guns are one mechanism for providing the means. Even if you could take away all guns, there are still other means available for humans to kill.

    What is the motivation for 40 attempted murders in one week in the city? Is anyone looking into that?

  22. Gang leaders by OrwellianLurker · · Score: 3, Interesting

    Anyone who is somewhat important in a gang would be wise to get all the kids in the neighborhood to damage the acoustic sensors. If this was impossible, another smart move would be to start shooting A LOT. Not at anything in particular-- just grab a pistol, put it in a bag, and fire. Get out of the area quickly (ditch the gun if necessary) and waste police resources tremendously. I'm betting that after thousands of rounds being pumped into the ground the police will stop responding.

    --
    'Political power grows out of the barrel of a gun.' - Mao Tse-tung