Fjordman has an excellent post.
The simple fact is that we never won the Cold War as decisively as we should have. Yes, the Berlin Wall fell, and the Soviet Union collapsed. This removed the military threat to the West, and the most hardcore, economic Marxism suffered a blow as a credible alternative. However, one of the really big mistakes we made after the Cold War ended was to declare that Socialism was now dead, and thus no longer anything to worry about. Here we are, nearly a generation later, discovering that Marxist rhetoric and thinking have penetrated every single strata of our society, from the Universities to the media. Islamic terrorism is explained as caused by “poverty, oppression and marginalization,” a classic, Marxist interpretation.
Why are you still hanging around here?? Go read the whole thing.