Gesetz zur Verhütung erbkranken Nachwuchses
The Law for the Prevention of Hereditarily Diseased Offspring was introduced on 14 July 1933, and various propaganda was used to target the disabled. A special euthanasia program, called Aktion T4 began in 1939, related propaganda arguments were based on the books, "Die Freigabe der Vernichtung lebensunwerten Lebens" ("Allowing the Destruction of Life Unworthy of Living"), written by Karl Binding and Alfred Hoche and the book "Human Heredity Theory and Racial Hygiene", written by Eugen Fischer, Erwin Baur and Fritz Lenz.