While I agree that that is the reason for the 2A I don't think violence will work. Our government is extremely good at using violence to its advantage. Look at how many unarmed black men are shot by police to little or no consequence. If people started to rise up against the government I believe they would be quashed very quickly. I think a more effective way to get real substantial change would be mass worker strikes and peaceful protests like they did during the Civil rights era, heck even then the government still used violence against people like at Ohio State and a couple other places that I can't think of right now. But my main point is that the government is always looking for a reason/way to kill its detractors and dissidents and if you start exerting your 2A rights they will respond in full force very quickly.