Problem is that if "cop" is on their resume, and they don't have any convictions, they wind up being a "cop" in another town, city, state, or your/my neighborhood. Solve the problem permanently, convict them for ANY crime they have committed, and they have to find a new line of work.
Absolutely true, and this is a problem of the cops, cop shops and government employees entirely, and why the leftists have made so many propaganda advances in this nation. The courts can't fix this.