Communist Sniper Pun

Listen here, you goofball. You think you're so smart because you can write a silly joke, huh? Well, you're not. This joke uses a pun. "Marxman" sounds like "marksman", you know, someone who's good at shooting, and also it refers to Karl Marx, the communist dude. The joke plays on the similar sound of the words. Get it now, or are you still confused?