There can be no doubt that great cruelty and violence can be and have been inflicted in the name of preserving the existing order.

But when we compare even the worst enormities of the more distant past with the leftist totalitarian revolutions and total wars of the twentieth centuries, they are in general a mere blip. The entire history of the Inquisition, said Joe Sobran, barely rises to the level of what the communists accomplished on a good afternoon.

The French Revolution, and particularly its radical phase, was the classic manifestation of modern leftism and served as the model for still more radical revolutions around the world more than a century later.