Prime Minister Justin Trudeau intensified his criticism of Conservative Leader Pierre Poilievre on Wednesday, when he linked his main challenger for power with an American conspiracy theorist who infamously spread lies about the mass murder of schoolchildren.

Trudeau delivered the broadside at a news conference in Oakville, after he was asked about a video circulating online in which Poilievre is shown telling people at an anti-carbon price demonstration — where the symbol of a group that police have linked with ideological extremism is briefly shown on a trailer door — that everything the prime minister says is “bulls—t.”