Kristallnacht, or the Night of Broken Glass, refers to a series of coordinated attacks against Jews throughout Nazi Germany and Austria on November 9-10, 1938. This event marked a significant escalation in the Nazi regime's anti-Semitic campaign, transitioning from economic and social discrimination to violent physical assaults against Jewish people and their properties. It serves as a critical moment in the lead-up to the Holocaust, showcasing the growing brutality of the Nazis and foreshadowing the systematic persecution that would follow.