I agree with the
sentiment about being suspicious of anything approaching cameras everywhere. These aren't cameras. The slippery slope argument is a
logical fallacy.
What's the real point of these things? (assuming it works as advertised):
Police have limited budgets. Personnel are their largest expense by a long shot. Nothing else comes remotely close. What police don't do, and really
can't do, is prevent crime. Presence patrols can deter crime to an extent, but it's a whackamole thing if there's a real overall crime problem as opposed to say a local gang causing localized trouble.
Budgets are the reason there are no longer large scale deployments of foot patrols. It's just too damned expensive.
Take Lowell, for instance. Suppose you wanted to have a solid presence foot patrol in the Centerville district (lots of problems there and if anywhere in the city is worth doing it it's probably there.) So that's four guys and gals on foot patrol who are not available for any other calls, even to areas adjacent to Centerville. They can't get there fast enough.
So now you have the expense of an extra four people on patrol for say two shifts per day, seven days per week, PLUS what you need for rapid response in the vicinity. Do that with another five areas in the city and you have just doubled your manpower budget for the year.
This is the kind of stuff the cops have to deal with, and no one is willing to vote (reasonably so) for the enormous budgets required for this kind of manpower.
Now to the shooting thing. You hear shots. You call it in to the cops. you can't pinpoint it, so either the cops A: ignore it, or B: drive around in circles hoping to get lucky.
This system tells them exactly where the shots occurred. It alerts them directly. They can get to the scene and if there's an ongoing incident, address it, and if it's a crime scene, they can A: talk to witnesses before they can disappear and B: get to the crime scene and gather evidence before it's so polluted it's useless. Hopefully this leads to the arrest and conviction of the doers, so at the least, they aren't going to be free to do it again.
It's great to be armed to defend yourself. But objecting to a useful tool that can't be useful for privacy invasion and may very well be useful for crime solving and getting bad guys off the streets is getting a little paranoid.