I wonder why we are comparing cops to apples in the first place, because what happens is entirely different: Police - especially in the US, but in most other places, too - is an authoritarian institution, so it inevitably promotes the kind of behaviour we are complaining about here. Therefore it’s not a case of “bad apples” infecting other apples, it’s a system that draws in people of a certain mindset, and the system is pretty resilient to any attempt to change it from within.
If you want a police that is a service to the citizens, you have to model it as a non-authoritarian institution.
