"Much of what we call Progressivism today is Cultural Marxism, and has steadily infiltrated Western culture throughout the 20th century, especially through the social upheavals of the 1960’s. The radical leftist Weathermen Underground terrorized American universities into accepting deconstructionism, the philosophy that all must be understood from a lens of historical domination and exploitation, as a valid intellectual replacement for the rigorous Western philosophical tradition and objectivity. The base of the ivory tower is scorched. Postmodernists declared, “There is no truth,” setting the stage for an amorphous, normless worldview that makes no categorical distinctions in an effort to be “fair.” This effectively hobbles free inquiry, and insulates the social experiment/totalitarian fad du jour from criticism, on penalty of the skeptical party being blacklisted."
This is really a good piece, and worth a read.