I laugh when Hillary and the dems use historical references. Why bother? The references are meaningless because liberals have done a good job making sure no one learns any history.
The author isn’t describing liberalism. He is describing groupthink, where useful idiots attach themselves to failed Marxist ideology as the cure for a Capitalist society that they are too angry with. This stems from their own inability to think logically as well as their indoctrination by professors who also couldn’t make it in a free society.