Indo-Aryan peoples
The concept of racial hygiene was an ideology central to Nazism, though it is scientific racism. High-ranking Nazi theorist Alfred Rosenberg noted that the Indo-Aryan peoples were both a model to be imitated and a warning of the dangers of the spiritual and racial "confusion" that, he believed, arose from the proximity of races. The Nazis co-opted the swastika as a symbol of the Aryan master race.