Clue: Olympian who enraged Nazi sensibilities, primarily! (5)
Answer: OWENS
Explanation: Definition: Olympi
First letters ('primarily') of '**O**lympian **W**ho **E**nraged **N**azi **S**ensibilities'. Jesse Owens was a black American who won four gold medals in the 1936 Summer Olympics in Berlin. So much for Aryan supremacy.