ภาพการประท้วงในเมืองเฟอร์กูสัน รัฐมิสซูรี่

Civil rights leader Rev. Al Sharpton speaks to a community gathering at Greater St. Mark Family Church in Ferguson, Missouri, August 17, 2014.

People defy a curfew, Aug. 17, 2014, before smoke and tear gas was fired to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson, Missouri.

Law enforcement officers wait to advance, Aug. 17, 2014, after firing tear gas to disperse a crowd in Ferguson.

Protesters gesture as they stand in a street in defiance of a midnight curfew in Ferguson, Missouri, Aug. 17, 2014.

A law enforcement officer watches, Aug. 17, 2014, as tear gas is fired to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson.

A law enforcement officer aims his rifle, Aug. 17, 2014, after tear gas was fired to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson.

A protester reaches down to throw back a smoke canister as police clear a street after the passing of a midnight curfew meant to stem ongoing demonstrations in reaction to the shooting of Michael Brown in Ferguson, Missouri, Aug. 17, 2014.

People defy a curfew, Aug. 17, 2014, before smoke and tear gas was fired to disperse a crowd in Ferguson.

A law enforcement officers check a building, Aug. 17, 2014, after tear gas was fired to disperse protesters in Ferguson.

Demonstrators weep on each others shoulders as masked individuals break into a store in Ferguson, Aug. 16, 2014.

Masked individuals carry items out of a store in Ferguson, Aug. 16, 2014.

Missouri Governor Jay Nixon declares a state of emergency and curfew in response to looting the previous night in Ferguson, Aug. 16, 2014.

A man protests the police shooting death of Michael Brown a week ago in Ferguson, Aug. 16, 2014.