Eight hundred to a thousand people were crammed into the superimposed compartments of each barracks. Unable to stretch out completely, they slept there both lengthwise and crosswise, with one man's feet on another's head, neck, or chest. Stripped of all human dignity, they pushed and shoved and bit and kicked each other in an effort to get a few more inches' space on which to sleep a little more comfortably. For they did not have long to sleep.
We had a quiet life until the day they took 1,000 Jews away from my village of Czemierniki, a typical Polish village with a big square around which community life took place. My father was a bootmaker, my mother was a seamstress and everyone worked hard. There was always some antisemitism, but it was mainly fairly harmless, consisting of kids at our school who during religious education taunted the five or six Jewish kids in the class with “Jews killed Jesus.”
Nazi eugenics were Nazi Germany's racially-based social policies that placed the improvement of the race through eugenics at the center of their concerns and targeted those humans they identified as "life unworthy of life" (Lebensunwertes Leben), including but not limited to the criminal, degenerate, dissident, feeble-minded, homosexual, idle, insane, religious, and weak, for elimination from the chain of heredity. More than 400,000 people were sterilized against their will. Adolf Hitler (Führer and Chancellor of Germany unitl 1945) believed the nation had become weak, corrupted by the infusion of degenerate elements into its bloodstream which had to be removed as quickly as possible. He also believed that the strong and the racially pure had to be encouraged to have more children, and the weak and the racially impure had to be neutralized by one means or another.
Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35. Himmler expanded the role of the camps to hold so-called "racially undesirable elements", such as Jews, Gypsies/Romanis/Sintis, Serbs, Poles, disabled people, and criminals. The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II and peaked at 715,000 in January 1945.