The Greenwald piece is right on the mark. The so-called neocons have no interest in free speech except for speech they like. For instance they support restricting the freedom of speech of college and university faculty (i.e., David Horowitz)
I agree with Chomsky on this - if you don't believe in freedom of speech for views you find repugnant then you don't believe in at all. Stalin was in favor of free speech for views he liked too.