The term racial hygiene was used to describe an approach to eugenics in the early 20th century, which found its most extensive implementation in Nazi Germany. It was marked by efforts to avoid miscegenation, analogous to an animal breeder seeking purebred animals. This was often motivated by the belief in the existence of a racial hierarchy and the related fear that "lower races" would "contaminate" a "higher" one. As with most eugenicists at the time, racial hygienists believed that the lack of eugenics would lead to rapid social degeneration, the decline of civilization by the spread of inferior characteristics.
Alfred Ploetz introduced the term "racial hygiene" in 1895.
Eva Justin checking the facial characteristics of a Romani woman, as part of her "racial studies"
Young Rhinelander who was classified as a Rhineland bastard and hereditarily unfit under the Nazi regime as a result of his mixed race heritage
Herero chained by German captors during the 1904 rebellion in South-west Africa
The social policies of eugenics in Nazi Germany were composed of various ideas about genetics. The racial ideology of Nazism placed the biological improvement of the German people by selective breeding of "Nordic" or "Aryan" traits at its center. These policies were used to justify the involuntary sterilization and mass-murder of those deemed "undesirable".
Eugenics poster at the exhibition Wonders of Life in Berlin in 1935 showing demographic projections under the assumption of higher fertility of the "inferior" (Minderwertige) relative to the "superior" (Höherwertige)
Hitler's order for Action T4
Propaganda for Nazi Germany's T-4 Euthanasia Program: "This person suffering from hereditary defects costs the community 60,000 Reichsmark during his lifetime. Fellow German, that is your money, too." from the Office of Racial Policy's Neues Volk.
A bus used to take patients to Hartheim Killing Facility
