We (BARF, society, the short bus) can debate this shit all we want. People can protest until the cows come home. DA's can pursue excessive force cases here and there. People can even win multimillion dollar civil judgements once in a while (it's just a redistribution of tax money.)
The simple fact is this. The cops aren't losing this fight. Law enforcement, the system, the institutions behind it, the broader population relying on the institutions, the system and law enforcement aren't losing this fight. Protesters can protest until the cows come home, until they're old and grey, and then stepping into their grave. And they will lose the fight.
Doesn't matter which side you're on or what you believe is right or wrong. What matters is practical reality. If people want to waste their time/lives in the streets protesting rather than getting on with their lives, I wish them the best of luck. But it isn't going to make a lick of difference. This isn't Rosa Parks on the bus or MLK on a bridge in Selma. The issues are vastly different and the outcome will be as well. These protests are just noise. Which will eventually fade.