Hanukkah is traditionally one of the most joyful seasons on the Jewish calendar—a time of light, hope, and remembrance. But this year, that joy has been overshadowed by a horrific act of antisemitic violence.

Fifteen people—including two rabbis, a Holocaust survivor, and a child—were killed in a mass shooting at Bondi Beach in Australia on Sunday. While its scale and horror are shocking, the attack is not an isolated incident.