Free speech is in crisis on America's campuses. Rather than refute an idea with which he disagrees, today's college student demands censorship. At the slightest hint of offense, the weak-willed administrator complies and disinvites a speaker while a close-minded protestor disrupts a lecture. This disturbing trend threatens the very purpose of education, to expose the mind to various points of view. The sad message today's students learn: shouting...