Many of the modern anticapitalists and marxists in the western world are aging out. Parenti is currently suffering from Dementia and Wolff is in his eighties and can't go on forever. Who comes next?
Essentially do you see any big modern marxist public figures coming in as the "old guard" ages out? Who?
Zizek! I'm kidding, but maybe the answer is not in the West, but elsewhere, and maybe the media just doesn't pay attention to them because it is in their best interest.