In addition to Marcuse, the author neglected to mention a few names and explain who these people in the Frankfurt School were. Allow me to add a couple: Eric Fromm (Critical Theory and feminism), Abraham Maslow (using the power of medical licensing to supplant religious values with psychiatry, and the developer of "sensitivity training").
This may be the most important thread of history in the 20th Century, perhaps more significant than the World Wars. Needless to say, children aren't told a word in public schools.
Here are a few good papers on the topic;
Erich Fromm, Feminism, and the Frankfurt School
What is the Frankfurt School?
Who Placed American Men in a Psychic 'Iron Cage?' Part I
Who Placed American Men in a Psychic 'Iron Cage?' Part II
for developing "sensitivity training" (ie: mini-gulags) Abraham Maslow should burn in Hell.
The Frankfurt School did not settle in the US but fled Germany in the mid 1930's because they were on Hitlers hit list.
Max Horkheimer the leader of the Frankfurt School was the first to leave and went to New York and was employed by OSS army intelligence where he gave the US govt valuable intelligence on prominent Nazis and German Stalinist operatives.
The FS was equally under the sights of Hitler and Stalin because they were Hegelian Marxists.
Georg Lucacs is an example of the suspicion that Stalin had of the FS school in the mid thirties. Lucacs was ordered to Moscow to account on a charge of Revisionism for some of his ideas published in the Theory of the Novel and the Historical Novel.
He barely talked his way out of a firing squad.
As far as their present influence the FS ceased to fashionable among the western left in the early eighties. They are most definitely not responsible for the emergence of multiculturalism which is a product of French Post Modernist epistemological scepticism.
Read the History of the Frankfurt School
http://home.cwru.edu/~ngb2/Pages/Back_Hist.html