Where do people get the idea that the 2nd Amendment has anything to do with protecting us from a tyrannical government?
The Constitution give us the means of changing government peacefully. If you don't like the government we've elected, you don't get the right to start a shooting war. That's called treason.
If government breaks down to the point where the Constitution becomes invalid, why do we care what the 2nd Amendment of it is?
Also, "the State" is us. We are the government. I know we lose sight of that from time to time but we still elect people to govern on our behalf.
I tend to view the 2nd Amendment as the choice between a standing army or an armed populace. Now we have both. Joy.