They marched first through the universities and then the public schools, and they succeeded in separating the Democrat Party, corporate leadership, and much of the intellectual and educated population from the Western moral and cultural tradition.  

The cultural Marxists did this by attacking the literary canon for lack of cultural diversity.  They used education to indoctrinate students with the values and outlooks of those hostile to their own culture which was negatively portrayed.  As time passed Shakespeare and Chaucer were replaced as topics of study by queer theory, post-colonialism, critical race theory, and gender theory. In place of the societal unity formed by enculturation, we have the divisiveness of Identity Politics.

Gender theory wipes out distinction between men and women, male and female. Critical race theory infuses white children with guilt and separates them from their race and their parents.  Normality is damned for being exclusive and is replaced by the diversity of perversion. This has been underway for several decades in the universities and is now the agenda of the public school system which is staffed with the graduates acculturated into the new diverse culture of the Tower of Babel.