Cultural Marxism is a branch of Marxist ideology which had its origins the early part of the twentieth century. It emerged as a response of European Marxist intellectuals disillusioned by the early political failures of conventional economic Marxist ideology.
The central idea of Cultural Marxism is to soften up and prepare Western Civilization for economic Marxism after a gradual, relentless, sustained attack on every institution of Western culture, including schools, literature, art, film, the Judeo-Christian religious tradition, the family, sexual mores, etc. The attacks are usually framed in Marxist terms as a class struggle between oppressors and oppressed; the members of the latter class allegedly include women, minorities, homosexuals, and adherents of non-Western religions such as Islam.
While Marx's Communist Manifesto focused on the alleged class struggle between bourgeois (owners of the means of production) and proletariat (workers), Marx did address culture, which he intimated would change after his economic vision was implemented.