Team Canada faces Team USA in Montreal in the Four Nations Face-off, and social media is already boiling about the game ...

In Montreal, fans booed the U.S. national anthem before an ice hockey match against Finland, which the U.S. team won 6-1.

Fans at NBA and NHL games in Canada have made a habit in recent weeks of booing during the pregame playing of the U.S.

It'll be loud. It'll be physical. It might get ugly. And that might just be in the stands at the Bell Centre on Saturday ...