One minute before noon on Saturday, Justin Trudeau, the Canadian prime minister, acknowledged an antisemitic riot the night before. “What we saw on the streets of Montreal last night was appalling. Acts of antisemitism, intimidation and violence must be condemned wherever we see them,” he stated.

“The Royal Canadian Mounted Police are in communication with local police,” he added. “There must be consequences, and rioters held accountable.”

Critics, including the opposition leader Pierre Poilievre, who heads the Conservative Party of Canada, had noted that Trudeau was attending a Taylor Swift concert while the riot occurred.