History has shown that the 2A is a stupid concept. For example, the 2A didn't prevent the federal government from infringing upon the rights of Japanese and Italian Americans during WW2, nor does it prevent the NSA from infringing upon your and my 4A rights.
Since guns don't prevent tyranny, what good is the 2A?
You raise a really good point. Should Japanese Americans have taken up arms against the government? Seems like this is the EXACT situation that is constantly cited by the 2A supporters. We both know what would have happened in that situation. Lots of dead Japanese Americans, but the internment camps would still have been there. Because a force of civilians armed with guns will simply be wiped out by a guy in a room controlling a drone. Which is why that argument is entirely irrelevant in modern times. But STY wants to go back to the 1840's and he would most likely have sided with the Confederacy.