Nazi eugenics
Those targeted for destruction under Nazi eugenics policies were largely living in private and state-operated institutions, identified as "life unworthy of life" (), including prisoners, degenerates, dissidents, people with congenital cognitive and physical disabilities () including people who were feeble-minded, epileptic, schizophrenic, manic-depressive, cerebral palsy, muscular dystrophy, deaf, blind, homosexual, idle, insane, and the weak, for elimination from the chain of heredity. More than 400,000 people were sterilized against their will, while up to 300,000 were killed under the Aktion T4, euthanasia program.