The single, most important organizational component of that effort was a Communist think tank called the Institute for Social Research in Frankfurt, Germany, popularly known as the Frankfurt School.
When the Nazis assumed power in Germany, the Frankfurt School transplanted itself to Columbia University in New York City.
The task of the Frankfurt School was first, to undermine the foundation of Western civilization that emphasized the uniqueness of the individual and, second, to determine new cultural forms which would increase the disaffection of and division among the population.
Just as in classical economic Marxism, where certain groups like workers and peasants are a priori good, and other groups like the bourgeoisie and capital owners are evil, in Cultural Marxism, feminists, racial and ethnic minorities and those who define themselves according to sexual orientation are deemed good and “victims” of societal injustice.