Prime Minister Justin Trudeau has rightly denounced the wave of antisemitism that has emerged in Canada since Hamas launched its brutal terror attacks on Oct. 7 and precipitated reprisals by Israel that have killed masses of civilians in Gaza. Molotov cocktails were tossed at a Montreal synagogue and a Jewish community centre. There have been three incidents of someone shooting at (thankfully empty) Jewish schools in that city. And, as Mr. Trudeau noted last week, there have been “horrific threats of violence targeting Jewish businesses, targeting Jewish daycares with hate.” The Prime Minister continued, “This needs to stop. This is...