At the start of the 4 Nations Face-Off matchup between the United States and Canada, Canadian fans booed the American national anthem for the second time in three days, leading to three fights in nine seconds to open the game. The rivalry was further showcased by players from both teams engaging in combative actions on the ice, reflecting the heightened animosity between the two countries. The booing was in response to recent political tensions, but it also intensified the already bitter rivalry between Team USA and Canada.
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