A suburban Chicago city recently rescinded a law against profanity in public places out of concern that the law may run afoul of the First Amendment, but says David L. Hudson Jr. of the First Amendment Center, the Constitution does not always protect profanity.
The list of unprotected speech includes fighting words, true threats and incitement to violence or other unlawful acts. -db
From a commentary for the First Amendment Center, October 6, 2011, by David L. Hudson Jr.