Gary Wolf writes a very good, short article, titled 'Diversity, Nihilism, and the Anti-Rational Mind' on American Thinker. Here's a portion:
Good, concise stuff.
[...]Looking back over the history of Western thought, we see numerous approaches to the nature of reality. One can be as Lucretius, seeing only the material world. One can be as Pythagoras, tracing existence to the perfection of mathematical laws. One can adhere to the Christian worldview, resting on God and His message. Then there is Descartes, elevating the rational mind to its place in the pantheon.
Though the net is very wide, what all of these approaches have in common is the exaltation of an aspect of reality. Each brings into focus a major foundation of our existence. Competing against each other for our hearts and minds, they create the marketplace of ideas.
But if the advocates of Diversity had their way, there would be no rational mind, no God, no regularity, no tradition, no schools of thought. From the vantage point of Diversity, it is crucial that these obstacles be swept away. They cause the individual to focus on behavior, not on outcomes. His world is filled with restrictions, maxims, and standards. This means that he is free to make history.[...]
One failure after another, even the totalitarian upheavals of the twentieth century, have done nothing to dampen their zeal.[...]