I've had a cop accuse me of being intoxicated because of the way I talk (monotone and a bit slow having Aspergers). I've been in a cop car, again due to a false belief I was intoxicated. My nephew has been harassed for having the same last name as his dad (it's a very uncommon name).
When I lived in Indiana, one cop tased an elderly man with advanced Alzheimers--while at a nursing home--because the guy was uncooperative. Many people I've know were road side searched despite the fact they had nothing on them to give probable cause. One cop threatened to shoot several people, including the mayor, because he didn't get a day off that he didn't formally request off. One sheriff got a vehicle for warzones because he believes America is a warzone. A drunk cop, on duty, hit and killed a motorist, and many people in the Indianapolis Metro Police Department tried very hard to cover all this up. They've also tried to have someone tried in a case that would have been double jeopardy. They also have a reputation for being very prejudiced, because they are.