Associated Press
Rev. Al Sharpton, center, accompanied by Trayvon Martin's parents Tracy Martin, left, and Sybrina Fulton gestures during a news conference at the Washington Convention Center in Washington, Wednesday, April 11, 2012. A law enforcement official says that charges are being filed in the shooting death of Trayvon Martin. The official with knowledge of the investigation says a prosecutor will announce charges against George Zimmerman on Wednesday at 6 p.m. Zimmerman's arrest is also expected soon.   (AP Photo/Jacquelyn Martin)

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