If you really thing about it. Society is not in a position to judge. They cant possibly no the entire story unless they were there. There is a reason the cops play up the good side of officers. Its called swaying public opinion. On the other hand they play up the negative side of anyone they happen to shoot. If you note neither actions have anything to do with what actually occurred. The supposedly "good" cop could have been a racist and shot the supposedly "bad" civilian simply because he wanted to. Thats why video of these events has become so important. Now we see cops on tape doing the things the Black community has long accused them of doing like planting evidence.
Cops that behave that way will plant evidence on anyone they choose to victimize, not just Blacks. Some years ago, a young man I knew was shot and killed in Houston and the policeman put a pistol on the ground beside him. He was a white kid. Had nothing to do with race. And, Society is the only entity that should judge because it's made up of ALL of us and reflects all of our values.
I mostly agree with that with the exceptions being that I can't say that those actions are done without a racial component. Given that the black community is policed at far higher rates than whites shows that blacks are more likely to be the victims of this abuse of authority. I agree that society should judge them. That being said, we all only know what we know. The protests after Ferguson have brought quite a bit to light about how blacks are policed and handled in the criminal justice system. Police departments around the nation have revisited their policies as a result. Protest movements are how we inform society to better judge.
The police ARE SENT where the CRIMES are. So don't blame them for more heavily policing black communities. Most of the residents of those communities are not engaged in illegal activities but are victimized by it. They support the cops as they know what will happen if the cops leave; and that is the explosion of murder rates and other violent crime that is now going on in inner cities across the country, most of the victims being other blacks.
You say, "Protest movements are how we inform society to better judge." and sometimes that is true, but calling for the murder of peace officers is not acceptable protest.