...and what is your source for any of this information? US news media? In a context where a man is cited for the theory that the ruling class of the US uses new

...and what is your source for any of this information? US news media? In a context where a man is cited for the theory that the ruling class of the US uses news media skillfully to get its population to adopt incorrect beliefs and support policies that favour the agenda of said ruling class, the retort that you know from the same news media that he has supported things which the same news media has told you are bad and untrustworthy (and hence presumably is bad and untrustworthy himself) is not particularly relevant. This is markedly not to say that it's impossible that he has actually supported {Soviets, Russians, Khmer Rouge, etc.}, or that any or all of those things are as bad as widely believed; only that we would expect exactly these observations (of widespread news-mediated belief of Chomsky being morally reprehensible and unworthy of trust) if his theory is in fact correct, and if P(X|Y) and P(X|~Y) are equal then X is not evidence for or against Y.