(Denny Crane: "I Don't Want To Socialize With A Pinko Liberal Democrat Commie.Say What You Like About Republicans. We Stick To Our Convictions. Even When We Know We're Dead Wrong.")
Not entirely true. I suppose the term "Marxist" has been soiled to the extent that few people call themselves by that name. Still, Marx's ideas have been folded into a lot of "conventional wisdom" -- they're the driving force behind the WTO/Anarchist folks, for example, not to mention our own beloved Moonbats.