FERGUSON, MO - AUGUST 14: Demetrus Washington joins other demonstrators protesting the shooting death of teenager Michael Brown on August 14, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Police in Ferguson have changed their procedure for dealing with the protests after being chastised for a heavy-handed approach which has resulted in four days of violence. Today three police cars and four officers on foot led the way during a protest march.   (Photo by Scott Olson/Getty Images)