Columbia was and is the most radical, leftist University in the US since the 1920’s. The Communist Party infected the place in the Mid-1920’s and has never left. Watch the documentary “A Wolf in Sheep’s Clothing” for more on the leftist history of Columbia.
This happened in 1968, when armed students occupied the office of the president of Columbia University: Paul O. Kristeller, the great scholar of the Renaissance, born in Berlin, feared for his library which included many rare Renaissance manuscripts. As a refugee from Germany he knew about mobs and anti-intellectuals and book-burning, and so he arranged to have his library moved, surreptitiously, in the night, off campus, to a barn in upstate New York.