I really feel you are picking berries in a berry field.....and watching too many TV shows. Bad apples are here and there everywhere: more good ones than bad ones in most cases. Bad apples in churches, government, society, rioters, looters, schools, sports.....................They are not shielded from the law they enforce. Never had anyone set to hang me.
Actually, some people do not like authority. Some people hate all authority figures. Some people think they know better than others. They love LEOs when they are in need of them, though. Split-second decisions when dealing with someone that has a record and considered dangerous, especially toting a gun against their prior rulings, is an accident waiting to happen. There are places you would never go if it weren't for them, and places you may never walk away from.