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A chart detailing physical characteristics of a Romani (Gypsy) individual, c. 1938. Dr. Robert Ritter and his team created extensive family trees and genealogical charts in order to identify, register, and classify all Romani people living in Nazi Germany. During the Nazi era, Dr. Robert Ritter was a leading authority on the racial classification of people pejoratively labeled “Zigeuner” (“Gypsies”). Ritter’s research was in a field called eugenics, or what the Nazis called “racial…
After the trial of major war criminals before the International Military Tribunal in Nuremberg, the United States held a series of other war crimes trials at Nuremberg—the Subsequent Nuremberg Proceedings. The ninth trial before the American military tribunal in Nuremberg focused on members of the Einsatzgruppen (mobile killing units), who had been assigned to kill Jews and other people behind the eastern front. This footage shows US prosecutor Ben Ferencz outlining the purpose of the trial during…
Dr. Robert Ritter and Eva Justin examine a young boy interned in a Zigeunerlager (“Gypsy camp”). Cologne, Germany, c. 1937-1940. During the Nazi era, Dr. Robert Ritter was a leading authority on the racial classification of people pejoratively labeled “Zigeuner” (“Gypsies”). Ritter’s research was in a field called eugenics, or what the Nazis called “racial hygiene.” Ritter worked with a small team of racial hygienists. Among them were Eva Justin and Sophie Ehrhardt. Most of the people…
Léon Degrelle was an extreme right-wing Belgian politician and Nazi collaborator. After the war, he continued to spread pro-Nazi propaganda for decades. Learn more.
The experiences of World War I and its aftermath would profoundly shape the attitudes and actions of leaders and ordinary people during the Holocaust.
Read a detailed timeline of the Holocaust and World War II. Learn about key dates and events from 1933-45 as Nazi antisemitic policies became more radical.
Learn about the provisions and impact of the 1919 Treaty of Versailles, including the "War Guilt Clause" which held Germany responsible for starting World War I.
After WWII and the fall of the Nazi regime, Holocaust survivors faced the daunting task of rebuilding their lives. Listen to Thomas Buergenthal's story.
Persecution of Jews and other targeted groups was already government policy in Germany once the Nazis were in power in 1933. But following the German invasion of Poland on September 1, 1939, war provided the opportunity and motivation for more ext...
Learn more about the shared foundational element of eugenics on the history of racial antisemitism in Germany and racism in the United States
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