Nazi racial and biological ideology

Much of Nazi Party policy, especially The Holocaust, was based on Adolf Hitler's views of eugenics. As he urged reproduction by what he considered superior people, he began efforts to suppress his idea of the subnormal, starting with involuntary sterilization, In Mein Kampf, he wrote,

The völkisch state must see to it that only the healthy beget children .... Here the state must act as the guardian of a millennial future .... It must put the most modern medical means in the service of this knowledge. It must declare unfit for propagation all who are in any way visibly sick or who have inherited a disease and can therefore pass it on.