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Photo by: Joe Burbank

Defense counsel Mark O'Mara holds up a chart during closing arguments in the trial of George Zimmerman at the Seminole County Criminal Justice Center, in Sanford, Fla., Friday, July 12, 2013. Zimmerman is charged in the 2012 shooting death of unarmed teenager Trayvon Martin. (AP Photo/Orlando Sentinel, Joe Burbank, Pool)

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