Upset over the loss of the Vancouver Canucks in the decisive game 7 to the Boston Bruins 4-0, fans in Vancouver overturned cars, broke windows and set stores and garbage cans on fire. USA Today reported police moved into to try to put an end to the violence:

Tear gas mingled with the stench of acrid smoke and stale beer as riot police, truncheons drawn, moved in to quell the violence, pushing crowds away from the burning cars.Later, police cars also were set on fire. At one point, police were using flash-bangs — grenades that are designed to distract and disorient, rather than injure — to try to break up the mob, said Chad McMillan, 31, a Vancouver resident and Canucks fan. - USA TODAY