Sometimes it isn’t the officers on the street who are the problem. My son works in a small town department of 22-25 officers and 10K town population.
They have a bad cop: a drunk, wrecked and had buddy move to driver seat. Still so drunk he goes to wrong house and breaks and enters on a little old lady and threatens her before he figures he in the wrong house. Multiple DUI arrest without giving person arrested their implied consent rights. Arrests with the person blowing under the legal limit. Executing home entries without proper warrants-multiple officers informed him this was illegal, still done. The DA losing multiple cases of this officer because he failed to show for court yet turned in time for being there, pulling tickets for his buddies, and theft at the police station caught on camera, confronted didn’t care. For this behavior HE WAS PROMOTED!
Other officers in the department signed affidavits detailing this officers abuses and the captain and watch commanders on several occasions took their concerns to the chief of police. His response, you all wouldn’t cut it as real cops and I would rather have 20 of the bad cop than you. The officers took the evidence to the city attorney-they agreed fireable but they didn’t have the legal power to do so. So they took it to the mayor, his response, I guess I will have to do a little more supervision. The dirty cop is still there and it’s not because fellow officers didn’t try to do the right thing. Now they are just in CYA mode for when this chief and his dirty officer finally go too far, so all cops are not dirty and do try to do the right thing.