It's not just about the police. It's about an entire society that has self-assembled into a caste system by treating some portions of the society as wards of the state.

The wards of the state aren't expected to be independent and responsible. They're given handouts in exchanges for their votes, and over time you have a whole generation that can't take care of itself. That's when the state steps in to take care of its wards "for their own good", and it's inevitable that over-corrections will happen.