I worked on a daily basis with police officers for approximately 25 years. The vast majority were good guys who cared a lot about the citizens that we were hired to serve. I was actually in an area that has more than its share of problems, and we did a lot to help those in need.
There were a couple who were jerks. He swore and threatened to arrest me when I stood up to him when I felt that he was treating a couple of citizens poorly. He got himself into trouble when he tried to get me into trouble by reporting the situation to his chief.
If a majority of cops are “good” cops, then there would be no “bad” cops. A little gather ‘round a bad cop by good cops at the beginning of a shift about how a bad cop’s life was going to get real hard, real quick if he didn’t get his act together would do wonders. I’m not sure the exact opposite doesn’t happen.