What is the name of the primary symbol, which is now outlawed outside of the context of art or science, and was widely used even on the state flag?
Strafgesetzbuch section 86a: The German "Strafgesetzbuch" (Criminal Code) in § 86a outlaws "use of symbols of unconstitutional organizations" outside of the contexts of "art or science, research or teaching". Nazi symbolism: The 20th century German Nazi Party made extensive use of graphic symbolism, especially the "Hakenkreuz" (swastika), which was used as its principal symbol and, in the form of the swastika flag, became the state flag of Nazi Germany.
swastika