Right, that brainwashing and cult mind control shit he was doing had nothing to do with it. Come on, I remember being taught in the fifth grade why Charles Manson's actions weren't protected under the First Amendment.
Except that he routinely preached his bile to complete strangers at parties, clubs etc. and the fact that one of the women he sent out to kill had known him for less than two weeks.
But carry on, by all means.
Total difference between Madonna telling a crowd of hundreds of thousands that she wanted to blow up the White House, and a person in an airport (or anywhere) saying that they want to blow up a plane, or Charles Manson in a club saying that he wants to start a race war. Totally different. Can't see the vaguest similarity.