Canadian hockey fans boo US national anthem with Trudeau in crowd before Americans win brawl-filled showdown

Canadian hockey fans booed “The Star-Spangled Banner” — setting off a brawl-filled game that ended with a US win Saturday night.

The game of the NHL-run 4 Nations Face-Off tournament could have been mistaken for a boxing event — with three fist fights breaking out between American and Canadian players following the widespread booing of the US national anthem by over 20,000 angry fans.

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.