Having said that, a lot of criminal violence happens if you're mixed up in that world or frequenting a bad area as opposed to just random violence. There's something different about police violence where it has that random quality and can affect you anywhere, sometimes just minding your own business.
Plus it's doubly egregious because the police are supposed to protect you, not hurt you. Even before this became an issue, and as a white person, I get nervous with police interactions. You just don't know what kind of mood they're in or how they're interpreting the situation.