President Obama spoke at the 50th anniversary commemoration of Bloody Sunday and the attack on marchers attempting to cross the Edmund Pettus bridge in Selma, Alabama, demanding the right to vote.  A couple of days earlier, in Madison, Wisconsin, marchers protested the shooting of unarmed 19-year-old Tony Robinson by a police officer.  The shooting came on the heels of the Department of Justice release of its report on the shooting of unarmed Michael Brown in Ferguson, Missouri.