"The Islamic conquest of India is probably the bloodiest story in history. It is a discouraging tale, for its evident moral is that civilization is a precious good, whose delicate complex order and freedom can at any moment be overthrown by barbarians invading from without and multiplying from within."
--Will Durant, The Story of Civilization
It's worth stating again that the barbarians are already inside the gate - they're the heirs and disciples of Antonio Gramsci, and they dominate the educational and cultural scene. With everything that implies.