Trump’s Executive Order and the Rise of Anti-Semitism

The president’s campus intervention ignores the bigger threat of anti-Semitism and threatens speech.

Last year, anti-Semitic attacks killed more Jews around the globe than in any year in decades. Worshipers were gunned down during Saturday services at Pittsburgh’s Tree of Life Synagogue. Attackers took the lives of a Jewish college student in California and a Holocaust survivor in France. German Jews were cautioned not to wear skullcaps or Stars of David on the street.

Charlottesville, Va., rang out with cries of “Jews will not replace us!” one year before. When...