If you think the police want to deal with arresting hundreds of people from protected groups then I think you might be slightly mad. They literally would be dealing with the fallout for years. I watched a show earlier this year about race and the police and it was truly eye opening. The dealings with the "community leaders" in these places blew my mind. They would watch someone spit in the face of police, try and assault them and still be asking why the police didn't just leave them to commit a crime. "They should have de-escalated", "they should have stepped back", "they need to understand our distrust of the police and why we try and assault them when they try to stop us committing crimes".
They are on a hiding to nothing in situations like this and all people care about is the criminals. They want to know the criminals were treated nicely. They don't care that police officers are put on leave for months on end while investigations take place. That peoples lives, careers and families are put under ridiculous stress while they wait for a witch hunt to take place against them.
I'm frankly astonished anyone wants to be in the police these days.