How did Nazis Germans regime use eugenics to eliminate retarded and deformed people?

The Nazi regime implemented eugenics through a series of policies aimed at "purifying" the Aryan race and eliminating those deemed "unfit," including individuals with disabilities, mental illness, or deformities. They enforced sterilization laws, leading to the forced sterilization of tens of thousands of people. Additionally, the regime established institutions where the physically and mentally disabled were killed through euthanasia programs, justifying these actions as part of their vision for a healthier society. This brutal campaign reflected their twisted ideology of racial superiority and the devaluation of human life.