Both the TSA guy and the deputy technically are right: there are limits to your First Amendment rights. You can't yell "fire" in a crowded theater and speech that could be interpreted as a threat (or "fighting words") can be restricted.
That said, it's idiotic to think that "Kip Hawley is an idiot" = a threat. I suppose Mr. Hawley should be proud of his minions, however, for at least being consistent.
