On Oct. 27, 2018, an act of unspeakable violence was committed at the Tree of Life Synagogue in Pittsburgh. An armed man, fueled by an irrational hatred of Jews, murdered 11 innocent people. This tragedy is a stark reminder of the need to confront and condemn antisemitism, which continues to manifest itself in ways both overt and subtle. The Tree of Life Synagogue massacre was the most violent attack against Jews in U.S. history. Five years later, on Oct. 7, 2023, Israel suffered the single deadliest attack against Jews since the Holocaust — this time, not at the hands of...