What is the current state of the law on "fighting words" and obscenity?

1. For example, some speech, such as fighting words and obscenity, is not protected by the First Amendment. See, e.g., Chaplinsky v. New Hampshire, 315 U.S. 568, 571-72, 62 S.Ct. 766, 86 L.Ed. 1031 (1942) (There are certain well-defined and narrowly limited classes of speech, the prevention and punishment of which have never been thought to raise any Constitutional problem. These include the lewd and obscene, the profane, the libelous, and the insulting or fighting words-those which by their very utterance inflict injury or tend to incite an immediate breach of the peace.) (footnote omitted).