I am probably one of the few people on earth who is something of a fan of both Karl Marx and Erik von Kuehnelt-Leddihn, despite serious disagreements with both. As a general rule, I think the Left is pretty good at criticizing the Right, and the Right is pretty good at criticizing the Left. Marxists are good at criticizing capitalism and Libertarians are good at criticizing the state. Most of the time, I tend to side with the anti-authoritarians or anti-establishmentarians or anti-institutionalists wherever they happen to appear, and sometimes they can come from strange or unexpected places.
In the “German Democratic Republic,” they tell the story about a weary old man who tries to gain entrance into the Red Paradise. A Communist Archangel holds him up at the gate and severely cross-questions him: