I have a very different view of the Dallas incident.  I think most Americans could not care less about the people needlessly killed by police because of their confront and control at any cost tactics.  Blacks are not the only victims of the carnage - witness Babb right here locally.  No people just don't care.  Note the standard response is do what the cops say and you won't be killed which completely ignores the adverse circumstances, fear, shock, and other factors that influence an individual's response when confronted by police.  Well, protests and calls for reform have led to nothing.  Now, with establishment lives on the line, I think we will finally see some serious consideration of what is wrong with police tactics.  Compassion is not in the play book of many Americans, but self interest is.  I think it took Dallas for many Americans to even consider that there is a problem.  Maybe now we can begin to work on solutions.