I don't know the numbers so cannot argue. But, even if they don't deter people (which I doubt), they sure help solving some serious crimes (I can provide plenty

I don't know the numbers so cannot argue. But, even if they don't deter people (which I doubt), they sure help solving some serious crimes (I can provide plenty of examples). That means they help putting criminals behind bars - making the streets safer. Cameras today can even be used as self defense. People are less likely to hit someone in public if they are being filmed. Look how phone cameras changed the way police do things for example. Why? because they know they are being filmed and cannot get away like they used to. I rest my case.