22 of 22: Demonstrators march after a rally for Trayvon Martin, the unarmed teenager who was shot dead in Florida by a neighborhood watch member, Wednesday, March 21, 2012, in New York. Martin's parents told people at the march in his memory that they won't stop until they get justice for him. He was killed Feb. 26 returning to a gated community in Sanford, Fla., after buying candy at a convenience store. He was unarmed and was wearing a hooded sweat shirt, called a hoodie. (AP Photo/John Minchillo)

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