I understand where you're coming from, but I don't know if I can agree. By your own definition of how propaganda in art is used then America would be a communist state in that case. Have you seen the drivel coming out of Hollywood? And not even recently, even older stuff, like true lies, it's all just propaganda to get you to hate Muslims and want to go to war with the middle east which America had such a boner for during that time, and shit, still does. Propaganda has no allegiance to a political structure, communist, socialist, capitalist, they all use propaganda.