The thing there that the West has not been able to accept to achieve this is the surveillance state. Just look at Flock.

I'm not sure anyone has really cracked how to get it done without that part, though certainly tweaking the spending from prisons to police would help a lot. The trouble in the US at least is people (rightly) don't trust police, and don't want to give them more power, so it also needs to be paired with reform on that front for the population to accept it.