There's legitimate dissent, then there's going to the battle ground, meeting with the enemy, and actively abbeting them a la John Kerry. The former is constitutionally protected; the latter, which includes the rat bastards at Code Pink, is treason.
The anti-war movement is showing its true color (and I find it little coincidence that this color is the very color of the pro-sodomy-legalization movement), and its members aren't even in the closet anymore about wanting our enemies to win. Ironic, that the only think the ass-hats on the left pray for is America's defeat in war.