I made an argument with one of my co-workers that I think that police unions should have to pay all legal bills and payouts for cops getting sued for violating rights. He responded "That's a quick way to get rid of all police unions," I had to stop and think if that would be a problem or not.
My point was the police unions are the only ones that can hold their members accountable. If they forced their members to act better instead of being thugs then things might change. If Police unions don't hold themselves accountable then no one will.