This is excellent:
Of course, Yglesias is correct and it's not easy to see how the American Revolution was legitimate. I suspect it wasn't. But if you think it was, then you're pretty clearly committed to the proposition that a violent overthrow of the American government this afternoon would be legitimate. Go for it!
Just so you're tempted to get too swept up in idolotrous Americanism, here's Herbert Spencer and George Kateb on patriotism. Also, Muppets, which are irrefutable evidence of the superiority of distinctively American culture.