Lee Harris has an excellent piece on how today's anti-American protestors pledge fealty to Marx bututterly misinterpret him:

Those who, speaking in Marx's name, try to defend the fantasy ideology embodied in 9/11 are betraying everything that Marx represented. They are replacing his hard-nosed insistence on realism with a self-indulgent flight into sheer fantasy, just as they are abandoning his strenuous commitment to pursuit of a higher stage of social organization in order to glorify the feudal regimes that the world has long since condemned to Marx's own celebrated trash bin of history. ...The belief that mankind's progress, by any conceivable standard of measurement recognized by Karl Marx, could be achieved through the destruction or even decline of American power is a dangerous delusion. Respect for the deep structural laws that govern the historical process--whatever these laws may be--must dictate a proportionate respect for any social order that has achieved the degree of stability and prosperity the United States has achieved and has been signally decisive in permitting other nations around the world to achieve as well. To ignore these facts in favor of surreal ideals and utterly utopian fantasies is a sign not merely of intellectual bankruptcy, but of a disturbing moral immaturity. For nothing indicates a failure to understand the nature of a moral principle better than to believe that it is capable of enforcing itself.
It is not. It requires an entire social order to shelter and protect it. And if it cannot find these, it will perish.

Read the whole thing.