In other words, you can try to rebel. You don't have the right to win though ;)
It certainly seems very American to think that people have a right to rebel...that's how we got our country, after all. But I'd say that's more of a natural right than a legal right--one that supercedes the typical concept of legality in its very nature.
What I meant above was more that the U.S. Constitution does not provide a power, right, or mechanism for states or individuals to violently rebel. It's certainly not the reason we have the 2nd Amendment (quite the opposite, actually).
I would actually say, though, that the Second Amendment is likely intended to put governments at explicit risk of rebellion, especially when it comes to day-to-day enforcement. It's not so much about rising up and marching on DC when they decide to oppress people. It's more about not being able to send in the cops to oppress people in the first place, because if they do, they'll end up being shot. Even within this century, the Black Panthers used the Second Amendment to protect blacks from police brutality: http://www.theatlantic.com/magazine/archive/2011/09/the-secr...