George Zimmerman, in the red jacket, as he was led through a police station in Sanford, Fla., after the Feb. 26 shooting death of Trayvon Martin. ABC News hide caption

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From 'Morning Edition': A look at Marion Hammer, who championed 'Stand Your Ground'

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Tracy Martin (left) and Sybrina Fulton appear at a forum held by Democratic members of Congress in Washington on Tuesday. Lawmakers discussed the death of the couple's son, Trayvon Martin, and racial profiling. Chip Somodevilla/Getty Images hide caption

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This photo of Trayvon Martin was held by a supporter during a recent rally in the Goldsboro neighborhood of Sanford, Fla. Brian Blanco/EPA /Landov hide caption

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Steven Bishop, of Raleigh, N.C. holds a photo of Trayvon Martin during an Occupy Wall Street march and rally on Saturday (March 24, 2012) in New York City. Mary Altaffer/AP hide caption

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