Violence? Check. Political commentary? You bet! Humor? It's got a little of that, too.
Steve can visit the television studio that films the cowboy show his younger brother's obsessed with. Out of nowhere, a cowboy is seen with his foot in a native American's chest, saying, as badly acted as humanly possibly, "Shit! Shit on a stickaroo!" We than see a hopelessly bored greaser holding up a stage direction with that exact phrase.