Which types of speech are not protected by the First Amendment?

Although different scholars view unprotected speech in different ways, there are basically nine categories:

  • Obscenity
  • Fighting words
  • Defamation (including libel and slander)
  • Child pornography
  • Perjury
  • Blackmail
  • Incitement to imminent lawless action
  • True threats
  • Solicitations to commit crimes

Some experts also would add treason, if committed verbally, to that list. Plagiarism of copyrighted material is also not protected.

Category: Freedom of Speech

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