O Canada
Watch Toronto hockey fans belt the national anthem in solidarity after the deadly van attack
A deadly van attack broke through an idyllic afternoon in Toronto on Monday, when a man driving a white van mounted the sidewalk and crashed into pedestrians. The incident, which occurred on the city's famous Yonge Street, left 10 people dead and 15 more injured.
Hours later, the Toronto Maple Leafs hosted the Boston Bruins at Air Canada Centre for Game 6 of their Eastern Conference quarterfinal matchup. The Leafs entered the series trailing 3-2, but kept their Stanley Cup hopes alive with a 3-1 win that forced a Game 7.
But before the triumph on the ice, the Leafs held a moment of silence for the lives lost on Yonge Street. Then came time for the customary performance of the national anthem, "O Canada," which Leafs anthem singer Martina Ortiz-Luis was set to sing — until the crowd chimed in. Watch the emotional moment below. Kimberly Alters