Tear gas reigns down on a woman kneeling in the street with her hands in the air after a demonstration over the killing of teenager Michael Brown by...
Police bind the hands of demonstrators who were subdued during a clash with 2, 000 demonstrators marching on a University of California at Berkeley...
Demonstrators run from tear gas thrown at them by police after a new confrontation over People's Park.
Police spray tear gas at Liverpool fans outside the stadium as they queue prior to the UEFA Champions League final match between Liverpool FC and...
Police spray tear gas at Liverpool fans outside the stadium prior to the UEFA Champions League final match between Liverpool FC and Real Madrid at...
An Iranian woman raises her fist amid the smoke of tear gas at the University of Tehran during a protest driven by anger over economic problems, in...
Police spray tear gas at Liverpool fans outside the stadium as fans struggle to enter prior to the UEFA Champions League final match between...
Demonstrators run as French police officers use tear gas in Paris on July 2 five days after a 17-year-old man was killed by police in Nanterre, a...
Former Pakistan's prime minister Imran Khan speaks during an interview with AFP at his residence in Lahore on March 15 while displaying teargas...
Demonstrators run from tear gas during the Bloody Sunday riots, which broke out after British troops shot dead thirteen civilians during a civil...
Photograph of a Tear Gas Attack as Strikers Battle Police During the San Francisco General Strike, circa July 1934.
On the eve of the Moratorium March On Washington to protest the war in Vietnam, police spray teargas to disperse demonstrators from the area around...
On the eve of the Moratorium March On Washington to protest the war in Vietnam, police spray teargas to disperse demonstrators from the area around...
Police fire a tear gas cannister over Telegraph Ave. During disturbance on first day of Peoples Park conflict.
Two men attempt 1st aid for mortally wounded James Rector who was shot by sheriff's deputies on first day of Peoples Park conflict.