U.S. university presidents joined Holocaust survivors and thousands of Israelis on Monday for the March of the Living, a yearly memorial march at the site of Auschwitz that honors the 6 million Jews killed by Nazi Germany and celebrates the state of Israel. This year, the mood at the march was overshadowed by the war in Gaza after the Oct. 7 attack on Israel by Hamas, the deadliest violence against Jews since Adolf Hitler's regime sought to destroy the entire Jewish population of Europe. The October attack unleashed a war that has led to a high number of Palestinian deaths, fueling pro-Palestinian protests that have swept U.S. campuses.