Chimhwi Brown, a 10-year-old from Brooklyn, sits on the steps of New York’s City Hall before the start of a rally where community leaders denounce the February 2, 2012 killing of 18-year-old Bronx resident Ramarley Graham by a city drug enforcement officer and the killing of 17-year-old Sanford, Florida resident Trayvon Martin, in New York March 26, 2012. REUTERS/Shannon Stapleton