More Violence in Ferguson, Missouri

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A man is detained after a standoff with police Monday, Aug. 18, 2014, during a protest for Michael Brown. (AP Photo/Charlie Riedel)

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Police take up positions after being shot at Monday, Aug. 18, 2014, in Ferguson. Police have used riot gear and tear gas and Gov. Jay Nixon ordered the National Guard to help restore order Monday. (AP Photo/Jeff Roberson)

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A man is led away after being detained by police. Ferguson, Missouri, Aug. 18, 2014.

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Law enforcement personnel meet for a briefing prior to the arrival of National Guard troops in Ferguson, Missouri, August 18, 2014.