Oh, yes, a lot of people who are old-line, card-carrying Communists still try to carry on with the official Communism of the past and hate these new, bastard forms. But Marxist-Leninist Communism of the old school is moribund. Marxism is still vitally alive, however, in various metamorphosed forms: feminism, race and gender studies, New Historicism, Postcolonial Studies, Black Studies, and so forth.
Marx, Freud, and Nietzsche are indeed the fathers of the Hermeneutics of Suspicion, to which I would add Darwin as an enabling uncle. But Nietzsche was rehabilitated as an icon of the left, whereas earlier he was scorned as a patron of the Nazis. There has been a confluence of different lines of thought: Nietzsche, ancient nominalism running back to William of Occam, Margaret Meade and the social anthropologists, Heiddeger, Derrida, Foucauld, the whole Frankfort School.
Then you have people like my friend Harold Bloom, who seem to be split in support and opposition to these currents, which is at least a welcome change from lemming-like adherance. Paul de Man was a Nazi during the war, but was readily adopted by the leftists, just going to show that there's not that big a difference between "socialism" and "national socialism." I got to know Derrida somewhat; a very unpleasant man, IMHO. I found it almost impossible to talk to him, but it was not necessary because he was always surrounded by worshippers. I never met de Man but know some of his disciples.