I don't live in the USA, but in my country normally when a cop is being abusive of the authority granted to him he has a few layers of command above him that to

I don't live in the USA, but in my country normally when a cop is being abusive of the authority granted to him he has a few layers of command above him that tolerate, and sometimes even encourage, such behaviour. I believe this is usually the norm and not an exception particular to my hometown.