Imposing Nazi Racial Policy in Poland

October, 1939 -
Hitler instructs doctors to kill physically or mentally "defective" Germans, the first order to murder a group of people based on racist ideology.

May 18, 1940 -
Germany deports 2,800 Gypsies to the Lublin region. In November, 5,000 Gypsies are sent to the Lodz ghetto.

November 15, 1940 -
The Warsaw Ghetto is sealed. Historian Emmanuel Ringelblum and colleagues decide to continue in secret their archive of Jewish life and code name it Oneg Shabbat (Sabbath Joy).