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Sybrina Fulton, Tracy Martin, Peter Yarrow, Paul Stookey

Trayvon MartinPeter YarrowNoel StookeyMartin Luther King Jr.
With Trayvon Martin parents, Sybrina Fulton, and Tracy Martin, Peter Yarrow, left, and Paul Stookey, right, of the folk trio Peter, Paul and Mary, perform at the 50th Anniversary of the March on Washington where Martin Luther King, Jr., spoke, Wednesday, Aug. 28, 2013, in front of the Lincoln... Charles Dharapak / Associated Press