I am 100% in support of what you've said, but there is one case where someone surprisingly got away with armed resistance against the government: Cliven Bundy[0]. The guy just stopped paying the government to graze his cattle on common ground, the feds came to sieze his cattle as a form of payment and were confronted with hundreds of armed guys he managed to rally to his cause. They backed down and left.
It's not quite the story of the little guy standing up for what's right against a tyrannical government though, just suggests that in some parts of the US if you show up with enough guns and outnumber someone you can intimidate them and get away with it.
[0] - no that is not a typo, his name is "Cliven"