They don't have to. There are plenty of good cops, but your mileage will vary with the integrity of the local PD. There are these hot beds of systemically bad police precincts and the power structure is organized such that those who could fix it are also those initiating it.
A large contributing factor is the military industrial complex spewing out death tech at an absurd rate, and with nobody to blow up with it all it just goes to police forces at auction. So you end up with towns of a thousand having swat teams and tanks and you wonder why the culture shifts from protecting and serving to war, death, and extortion.
A large contributing factor is the military industrial complex spewing out death tech at an absurd rate, and with nobody to blow up with it all it just goes to police forces at auction. So you end up with towns of a thousand having swat teams and tanks and you wonder why the culture shifts from protecting and serving to war, death, and extortion.