Well, I see 4 kinds of cops:
1) Was bullied in school / needs to bully ‘legit’ as a cop as ‘payback’
2) Was a bully in school / needs to keep bullying
3) Became a cop to protect the weak – and keep people overdoing it when they try to defend themselves.
4) Believes the law is the law and someone needs to uphold it and that’s them.
Cop 1+2 are Bad Cop
Cop 3 is Good Cop
Cop 4 is Good Cop or Bad Cop, depending whether the laws they are upholding are fair.