When the professionals paid to uphold the law become above the law, there's a problem. When they, the police, aren't accountable to the people who pay their wages, there's a problem. When there's no way to reign them in due to policies in place from top to bottom in law enforcement, then there's a problem.
I'm not even saying that "all cops are bad", unfortunately, the bad ones are really giving a black eye to all of them. And if they, the police, feel they can police themselves, then I say "get with it and let's see it".
So far, there's been nothing, or very little.
The cities pay good money for the police and yet it seems that money is spent buying thugs to put in uniform.