Sorry... but that's just another stupid comment.
The policemen shot and killed at that event were targeted by a sniper set up in a building. He was a black man who had stated that he wanted to kill white police officers. Anyone armed with an AR 15 at that march was very likely a black man, as well, and were trying to get out of the line of fire. How would they "help the cops" if the shooter was shooting from concealment, and nobody knew where he was?
Do you even think about the stuff that you write, or do you just throw stuff up against a wall and hope something sticks?
Your posts are amusing, though.