What happened inFerguson was that a guy robbed a QuickMart store, then walked with his friend in the middle of the road while high on pot, then physically assaulted a police officer who tried to apprehend him for jaywalking, then got shot when the officer that he attacked and beat ordered him to get on the ground and he instead started walking towards that officer (and had his friend with him). Btw the robber was 6'2 and 300 lbs, about twice the size of that policeman. Had he been white and the policeman black, he'd get shot under the same circumstances just as well. The crowd then got all worked up and started attacking and looting businesses - starting with the very store that the robber robbed. Some kind of justice, eh ? AG Holder then went on a fishing trip, promising the crowd he'll get them justice. He found nothing, and left empty handed.
If I beat up a police officer (doubt that I could, frankly), am ordered to lay down on the ground, and instead start walking back towards that officer, I will likely get shot as well. Especially if I am double the size of the said officer, and have a friend with me. Nothing to do with police brutality or race. Don't break the law, then attack the police, then act in a threatening way. Except that there would be no riots or burning and looting of innocent people's homes and businesses in my name.