re: Tolerance of dissent is patriotic.
A step down: "You treasonous pig! How dare you hold an opinion which doesn't support American policy?!"
Amen! I've grown weary of it (hence my column "Quit Screaming in My Ear), disagreeing with each other is one of the strongest forms of democracy. Free speech is such a fundamental part of the democratric process I doubt that it could survive its removal.
As free people we have the right to our opinions, correct or not, and the right to voice them publically. As the oposittion has the right to say their piece.