FERGUSON, MO - AUGUST 17:  A person runs through a clowd of tear gas that police launched at demonstrators protesting the killing of teenager Michael Brown on August 17, 2014 in Ferguson, Missouri. Police shot smoke and tear gas into the crowd of several hundred as they advanced near the police command center which has been set up in a shopping mall parking lot. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)