[goobatrooba]

Cameras don't prevent crime, they just increase the cost of doing so (or the cost of preparing for it).

Most crime is spontaneous. Plenty of examples from across the world that installing cameras or other checks at best shifts crime to other areas.

[bko]

I'll take shifting crime as long as it's away from me.

Camera's 100% prevent crime because you catch the bad guy, and in a sane society lock the person up so he can no longer commit crime. See how that works?

[krupan]

C'mon, you aren't going far enough. Catching someone after the crime was committed is not preventing the crime. You need AI to watch the cameras non stop and alert you before someone commits a crime ;-)