Another reader going through the opinion, pulls this out:
Justice Scalia, in his opinion, writes, “This is a sad day for freedom of speech.” He then adds, “Who could have imagined that the same Court which, within the past four years, has sternly disapproved of restrictions upon such inconsequential forms of expression as virtual child pornography…tobacco advertising…dissemination of illegally intercepted communications…and sexually explicit cable programming…would smile with favor upon a law that cut to the heart of what the First Amendment is meant to protect: the right to criticize the government.”