Both my parents were retired Police, and I know there's a lot of good people that work in those fields. I also know that not every community, situation or person is the same and there are a lot of people on power trips that even fellow cops don't always like. It's often hard to speak out from within a group.
Some of the more recent events are particularly grievous and should absolutely be prosecuted... There are many more incidents that should be as well. I tend to say it's rarely (though sometimes is) about race, it's usually a matter of blue vs everyone else.