Ernst Rüdin, Swiss psychiatrist, geneticist, and eugenicist (born 1874)

Ernst Rüdin was a Swiss psychiatrist, geneticist, eugenicist and Nazi, rising to prominence under Emil Kraepelin and assuming the directorship at the German Institute for Psychiatric Research in Munich. While he has been credited as a pioneer of psychiatric inheritance studies, he also argued for, designed, justified and funded the mass sterilization and clinical killing of adults and children.

October 22 is the 295th day of the year in the Gregorian calendar; 70 days remain until the end of the year.