The thought comes to mind that the recent incidents may go a long way toward accomplishing what more civilized people have been trying to do for years: get the police to stop with the unnecessary roughness. The problem has been that civilized people address such abuses of authority in court, and the cops and the municipalities don't pay any penalty -- any settlement comes from insurance.
A few more incidents like Ferguson and Baltimore, and maybe some police departments will start to realize that actions have consequences.
Nah ... wishful thinking, at best.