Holy false dichotomy Batman. The amount of crime you can reduce by funding decent law enforcement training and a working law system and just by having a general halfway welfare system dwarfs the effects these privacy invading solutions could ever produces. Absolute lunacy to believe that.
"Never give power to authorities that wouldnt want them to have if someone you didnt like was in charge"
While I fully agree with your statement, until we as a society learn to self regulate and prevent things like orange man happening, its best that we live in a world where people in charge have as little power as possible.
Having adequate law enforcement training and funding, is not mutually exclusive with leveraging technology for more effective enforcement. In fact that's where some of the funding goes. I would be interested in seeing some data reflecting a reduction in crime as a result of increasing the welfare system, as you claim.
I mean compared to corporate written Wikipedia articles from privacy invading dystopian nightmare companies the evidence that welfare reduces crime is so obvious that even a quick google search drowns one in 3rd party validate studies:
But again, by the time we did all the non privacy invading stuff that doesn't target me as a law abiding citizen the discussion about these devices becomes moot because crime isn't that much of a problem anymore.