Context. Context is why Downfall is okay and ars_belli's Nazi fetish is not. She's not asking for thoughtful, brutally honest examinations of why Nazism occurred and what lessons we can take from our ancestors' mistakes to do better next time -- you know, the stuff actual Germans often produce when they make media about Nazis. She's asking for things that trivialize a historical tragedy because some of the people involved were sharp dressers.