William O. Douglas,
United States v. International Union United Automobile…
“ One has a right to freedom of speech whether he talks to one person or to one thousand. One has a right to freedom of speech not only when he talks to his friends but also when he talks to the public. It is startling to learn that a union spokesman or the spokesman for a corporate interest has fewer constitutional rights when he talks to the public than when he talks to members of his group. ”
