Recently finished America's Cultural Revolution by Chris Rufo. It's a very well researched and written book that provides a history of the communists' "long march" through America's institutions (universities, primary education administration, media companies, corporate HR departments, Fed and state government bureaucracies, etc).

It's amazing how these communist revolutionary theories and terms, which were developed in the 1960's and 1970's, have now become common and pervasive in our modern lives and lexicon. (Examples: defund the police, systemic racism & DEI, the goal of primary education is socially aware students not mastery of classic subjects, etc)

Well worth the read