Propaganda...isn't almost every film propaganda?

Unless the story has no intention to portray an opinion. Ofcourse, that doesn't make them tools of a governement, but I just see little difference between a movie about the russian civil war or a 'western' movie funded by defense?

So what I read on IMDB, is that one of the following criteria must be met in order to make a movie propaganda:
-It must be foreign
-Strong political opinion
-Glorify the rise of evil guys

But now look at it from the other side of the ocean....The Patriot is as much a propaganda film as Potemkin, isn't it? And what about Gandhi, Platoon, Rambo or Casablanca...aren't they all propaganda in their own way?

So...what do you think should qualify as a propaganda film?