Open this photo in gallery: Supporters of Israel look on as a pro-Palestine rally takes place across a road in Calgary, on Nov. 19.Jeff McIntosh/The Canadian Press Antisemitic acts have been occurring in Canada in ever-increasing volume since the Oct. 7 massacre of 1,200 Israelis by Hamas terrorists, and the kidnapping of 250 more. In the weeks that followed Israel’s military response to those crimes, a Jewish school in Montreal was twice fired upon, leaving two bullet holes. A Jewish delicatessen in Toronto was fire-bombed. An Indigo bookstore in Toronto was vandalized, because the chain’s founder is Jewish. Protesters in...