The Animation Guild Blog has an entry and links to a new DVD release of animated Soviet propaganda. If you follow this link, you can see a half hour documentary from the set dealing with American imperialism that includes clips from many films. The complete set includes four half hour documentaries and six hours of animated films.
Having seen a fair amount of American propaganda cartoons from World War II, it's fascinating to see the U.S. viewed from another ideological viewpoint. The films excerpted in this documentary view America as a racist and corrupt society where money can buy a dog a place in congress or where rich people can amuse themselves in a shooting gallery by using live people as their targets.
Other parts of the set focus on fascist barbarians, capitalist sharks and the Soviet shining future. You can order the set here, and the page includes a two minute trailer and a mosaic of images from the films.