Freight car, Auschwitz II- Birkenau, by Sinsk. Image is from Wikimedia Commons.
Antisemitism was a centuries-long phenomenon in Europe, but it reached its height in Germany during the Nazi era (1933–1945). Source: National WWII Museum, New Orleans. https://www.nationalww2museum.org/war/articles/holocaust
Where one burns books, there one eventually burns people. (H. Heine,1820)
Illustrated atlas of Jewish civilization by 
Holocaust: the events and their impact on real people. by 
The Holocaust by 
The Penguin Historical Atlas of the Third Reich by 
The Holocaust: mankind's darkest hour by 
The Holocaust by 
The Holocaust: Causes by Penguin Books: On Mein Kampf:
It is the most notorious political tract of the twentieth century, a mixture of unreliable autobiography and half-baked political philosophy...
The Nazi Party, founded in 1919 and led by Adolf Hitler, gave political expression to theories of racism. In part, the Nazi Party gained popularity by disseminating anti-Jewish propaganda. Millions bought Hitler's book Mein Kampf (My Struggle), which called for the removal of Jews from Germany. (Holocaust Encyclopedia)