If you were to do an informal poll of conventional progressive opinion—asking where is the public to be found, in acts of speech or in the marketplace—I suspect most liberals, and probably not a few leftists, would say: in acts of speech. Since the eighteenth century, speech has been firmly associated with the public sphere or the public square. “The people’s darling privilege”: that’s how freedom of speech was understood, as the instrument of the people, assembled in their sovereign and public capacity. There’s a long history behind the notion, stretching back to Aristotle, whose justification for the claim that man is a political animal rests upon the fact that human beings, unlike other animals, have the capacity for speech. […]