Communist Bolshevik thugs (Castro, Che, Mao, Lenin, Stalin, Pol Pot) are romanticized, featured positively in films, and fawned over by liberal elites.
But any association with Nazi Germany is immediately condemned.
1. Ownership of the means of production.
2. Fascism lost WW II and Socialism didn't, so Socialism gets better press.
3. The Nazi's had snazzier outfits than the Soviets or more recently, the Chinese and Koreans.