Seventy-eight non-Jewish Canadian professionals published an open letter on June 28, 2026, launching the Stopping Antisemitism movement and condemning antisemitism. The letter appeared in newspapers such as the National Post, the Toronto Star, Le Devoir, the Vancouver Sun, and The Globe and Mail.

The Stopping Antisemitism movement is an ad hoc, non-partisan group. Signatories of the open letter included former prime minister Stephen Harper, the CEO of the National Bank of Canada, and university presidents. "As a group of Canadian businesses and community leaders who are not Jewish, we ask colleagues to join us in condemning any act of antisemitism in this country," the signatories stated. They added that "Hate and intolerance have no place in Canada's workplaces, public spaces, or anywhere."

The letter calls for Canada to adopt a consistent national approach to law enforcement, prosecution, and sentencing regarding antisemitism. It also urges Canada to ensure that terrorist organizations, their proxies, and adherents do not operate within the country. In 2025, Canada recorded 6,800 antisemitic incidents.

Canadian Prime Minister Mark Carney endorsed the campaign on June 28, 2026, by reposting the letter to X/Twitter. Carney stated that "The crisis of antisemitism in Canada today demands a targeted response." He added that it "also requires all of us to raise our voices in disgust and defiance when we see the ugly face of antisemitism." Carney concluded by saying, "Because Canada's promise is a country where Jewish Canadians can be visibly, fully, joyfully Jewish in public life."