Throngs of angry protesters, denouncing coronavirus vaccines and lockdown measures, are becoming a fixture at Canadian Prime Minister Justin Trudeau’s election campaign stops.

In Ontario on Monday, gravel was thrown at Trudeau from a crowd of demonstrators, many of whom held signs for the far-right People’s Party of Canada

Barbara Perry, a professor at Ontario Tech University and director of the Centre on Hate, Bias and Extremism, says anger at Trudeau “Has been building for years among right-wing groups in Canada.”