"Here is the most fundamental rule of film criticism: A movie is not about what it is about, but about how it is about it. The subject does not and cannot make a movie good or bad. Only the style, the approach, the method, the craftsmanship, the purpose and the message can make a movie good or bad." - Roger Ebert
@confusedcharlot I think that's "purpose and message". You can make a movie about Nazis without being pro-Nazi. It's the being pro-Nazi that makes the movie bad.