ST. LOUIS, MO – MARCH 14: Ferguson activists march through downtown during a protest on March 14, 2015 in St. Louis, Missouri. St. Louis and the nearby town of Ferguson have experienced many protests, which have often been violent, since the death of Michael Brown who was shot and killed by a Ferguson police officer in August. On Wednesday evening two police officers were shot while they were securing the Ferguson police station during a protest. (Photo by Scott Olson/Getty Images)