Former ESPN broadcaster Keith Olbermann called on his former employer to fire Pat McAfee over his remarks about Canada. McAfee blasted Canadians for booing the U.S. anthem.

That’s been most apparent during professional sporting events that feature teams from both countries. Citizens from Canada have started booing the U.S. national anthem, and vice versa. It all seemingly got started at an NHL game last month (after President Trump initially announced the tariffs), and it’s continued into March.

Olbermann called McAfee an “idiot” who should be fired over his outburst — when he called Canada a “terrible country” — while color commentating for WWE’s “Elimination Chamber” in Toronto on Saturday. McAfee chastised Canadian fans during the broadcast after “very loud” boos rang down during the U.S. national anthem at Rogers Centre.