SANFORD, FL – JULY 12: Marcus Campbell, 14, demonstrates outside the Seminole County Criminal Justice Center where today jurors began deliberating in the trial of neighborhood watch volunteer George Zimmerman on July 12, 2013 in Sanford, Florida. Zimmerman is on trial for the February 2012 shooting death of 17-year-old Trayvon Martin. (Photo by Scott Olson/Getty Images)