File photo of protestors at the St. Louis County Justice Center calling for the arrest of Police Officer Darren Wilson in Clayton


2 OF 3. Protestors at the St. Louis County Justice Center call for the arrest of Police Officer Darren Wilson in Clayton, Missouri in this August 20, 2014 file photo. CREDIT: REUTERS/MARK KAUZLARICH

Protestors at the St. Louis County Justice Center call for the arrest of Police Officer Darren Wilson in Clayton, Missouri in this August 20, 2014 file photo. REUTERS/Mark Kauzlarich