As soon as the singer, Royal Canadian Air Force member David Grenon, began belting, “Oh, say, can you see,” the crowd at the Bell Centre in Montreal let out an aggressive and booming chorus of boos that nearly drowned out the anthem entirely.

The 4 Nations Face-off's marquee matchup took an ugly turn before the puck even dropped on Saturday. Ahead of the long-awaited game between Team USA and Team Canada, fans booed the U.S. national anthem, continuing a recent trend of Canadians expressing their displeasure with the Americans.