Sort of the joke in this. Crime in western countries has declined as police hyper-surveillance has increased. I don’t think it is unfair to say that a suffocating perpetual dragnet created by a public-private Big Brother network has contributed to depressed rates of stochastic violence. Or that the few groups capable of committing crimes and getting away with it are the police and sheriffs offices, the individuals in their employment, and the turncoats they use to influence and infiltrate other groups.
We don’t count “preemptively solved crimes”, unless we’re trying to make headlines with “foiled assassination/terrorist plot” to inflate some bureaucrat’s reputation. We also don’t count false positives - people who had their doors kicked in and their family roughed up and their dog shot in the dead of night - when we’re tallying police effectiveness. Out of sight, out of mind.
The only thing we really see is active shooters on the evening news and burglary footage on the local. So we’re always having a “crime problem”. The current police state is never big enough. Surveillance isn’t “real” enough to impact the news cycle, because something is always happening somewhere that can be reported on as the next big Crime Wave.