President Obama issued a statement Friday marking the 75th anniversary of Kristallnacht, saying it “now signifies the tragic consequences of silence in the face of unmitigated hatred.”

Kristallnacht, known as “the Night of Broken Glass,” happened Nov. 9-10, 1938, when Nazis marched through towns in Germany and Austria destroying Jewish businesses, synagogues and homes.

Rioters vandalized and looted 7,500 Jewish businesses, burned or destroyed 267 synagogues and killed at least 91 Jewish people, according to the U.S. Holocaust Memorial Museum.

“Let us act in keeping with the lessons of that dark night by speaking out against anti-Semitism and intolerance, standing up to indifference, and re-committing ourselves to combatting prejudice and persecution wherever it exists,” Obama said in a statement. “In so doing, we honor the memories of those killed and reaffirm that timeless call: ‘Never Again.’”

The event marked a turning point in the Nazi’s treatment of Jews, and foreshadowed the beginning of the Holocaust — the mass extermination of more than six million Jews during World War II.