Instruct: Classify Amazon reviews into positive or negative sentiment
Query: proof of anti-Americanism?

The idea of attempting to "analyze Chomsky's intellectual career and the evolution of his anti-Americanism" is not much of a goal to set out on. What exactly does "anti-Americanism" mean, beyond a paranoid way of saying "political critique of one's own country"? Using the term "anti-Americanism" as if it means anything is dangerous, as has been demonstrated by the history of investigations of un-American activities. Not to mention that Chomsky's critiques extend past America to other countries, first and foremost, Israel. The only valid use of the term "anti-Americanism" which I can imagine would be to refer to people elsewhere who blame all problems on Americans, and fail to see their own contributions to problems and those of their governments. But to use the term when talking about an American citizen, who clearly likes some things about this country (the dude still lives here!) is ridiculous. Critiquing government policies is never anti-American.