Well, sure, there's always the armed populace, but that is inherently illegal rebellion against the government, and it would be violently resisted by the government. (And, for the record, almost everyone I know owns guns, and that percentage was even higher before I moved to San Francisco.) But even though founding fathers wrote about the inevitability and even duty to violently resist an oppressive government, that's certainly not built into the government's rules for itself (the Constitution). Nowhere in the law does it say that these laws only need to be followed if you believe them to not be oppressive, or that you are free to overthrow the government if you find it oppressive.