You're thinking of Leni Riefenstahl, director of such Third Reich classics as 'Olympiad' and the Nazi fave 'Trumph of the Will', a documentary of the Nazi rally in Nuremburg, the same city where the Allies would try the top Nazis for war crimes after WWII. Leni was more of a sellout and tool of the Nazis (she got big budgets and complete artistic control in exchange for her propaganda production) than a perpetrator or even accomplice. I'm not saying she is innocent of any wrongdoing, but it would be unfair to put her in the same category as Hitler, Himmler, or Mengele. That would be like comparing some 5th phaser girl with Miller, Mel, or Ruthie.