The USC Shoah Foundation stands in solemn tribute to the memory of those murdered by Hamas on October 7, 2023, and to those hostages still in captivity. As we mark this day, we reflect not only on the devastating loss of life but also on the dangerous beliefs that led to this atrocity. The attacks on October 7 revealed the persistence of virulent antisemitism in communities across the globe. Antisemitism threatens the memory of the Holocaust, threatens individual lives and communities, and undermines democratic values, the rule of law, and global security.