Defense attorney Mark O'Mara (left) with his client, George Zimmerman, at an April hearing related to second-degree murder charges in the killing of Trayvon Martin in Sanford, Fla. Pool/Getty Images hide caption

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A handout composite provided by the Seminole County Sheriff's Office, showing George Zimmerman in new mugshot photos. Seminole County (Fla.) Sheriff's Office/Getty Images hide caption

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George Zimmerman during his bond hearing in a Seminole County, Fla., courtroom on April 20. Gary Green/Orlando Sentinel-Pool/Getty Images hide caption

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A photograph of George Zimmerman's head taken after the Feb. 26 shooting death of Trayvon Martin. It shows blood from injuries he Zimmerman says he received during their encounter. Florida State Attorney's Office/AFP/Getty Images hide caption

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