More Unrest in Wake of Police Shooting of Unarmed Black Teenager

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Riot police stand guard as demonstrators protest the shooting death of teenager Michael Brown, in Ferguson, Missouri Aug. 13, 2014.

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Riot police stop a vehicle as they clear a street of demonstrators, in Ferguson, Missouri, Aug. 13, 2014.

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Riot police clear a street with smoke bombs while clashing with demonstrators, in Ferguson, Missouri Aug. 13, 2014.

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Lesley McSpadden (right), mother of 18-year-old Michael Brown, watches as Brown's father, Michael Brown Sr., holds a family picture, during a news conference, Aug. 11, 2014.