I think you are being too charitable. While there is some selection bias where people who have stories of police are more likely to report bad ones, most people

I think you are being too charitable. While there is some selection bias where people who have stories of police are more likely to report bad ones, most people get by by simply not interacting with the police. The problem is a lot of legitimate issues do not end up documented. For example, an officer in a nearby small town was ordering drugs to people's houses and trying to pick them up. Did he have delusions of grandeur, and wanted to stage some bust? Did he want to sell them himself? Did he want to plant them on the teenagers at the local highschool? We'll never know, because somehow what he was doing was never documented, he was never charged, and he "left of his own volition" for another department. How many local cases are tainted because of this cop? Every drug charge years back is now suspect and should be thrown out. But it wasn't documented or reported.