Authorities say one person was shot and critically wounded and seven people arrested early Sunday morning as police used smoke and tear gas to enforce a curfew in the U.S. town of Ferguson, Missouri.
Missouri Police Use Smoke, Tear Gas on Protesters

១
Civil rights leader Rev. Al Sharpton speaks to a community gathering at Greater St. Mark Family Church in Ferguson, Missouri, August 17, 2014.

២
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.

៣
Law enforcement officers wait to advance, Aug. 17, 2014, after firing tear gas to disperse a crowd in Ferguson.

៤
Protesters gesture as they stand in a street in defiance of a midnight curfew in Ferguson, Missouri, Aug. 17, 2014.

៥
Japanac Norijaki Kasaki leti na skijama na treningu za Svetski kup skijaških skokova u Bišofšohenu u Austriji.

៦
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.

៧
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.

៨
People defy a curfew, Aug. 17, 2014, before smoke and tear gas was fired to disperse a crowd in Ferguson.

៩
A law enforcement officers check a building, Aug. 17, 2014, after tear gas was fired to disperse protesters in Ferguson.

១០
Demonstrators weep on each others shoulders as masked individuals break into a store in Ferguson, Aug. 16, 2014.

១១
Masked individuals carry items out of a store in Ferguson, Aug. 16, 2014.

១២
Missouri Governor Jay Nixon declares a state of emergency and curfew in response to looting the previous night in Ferguson, Aug. 16, 2014.

១៣
A man protests the police shooting death of Michael Brown a week ago in Ferguson, Aug. 16, 2014.