Okay. First thing. This has been bugging me for a while, now: "Obummer"? That sounds like something a fucking surfer would come up with on the fly.
Secondly, fuck you for having the gall to compare yourself to the victims of one of the worst tragedies in our history just because someone suggested that maybe several million random assholes who rush to assume the worst possible scenario at the slightest provocation don't have any good reason to own an assault rifle.
Thirdly, no amount of guns or bullets would save you if the government were to take such a turn. You are NOT John Rambo, the real world does NOT operate on the rules of shitty 80s action flicks and you would NOT pose any kind of threat to any marksman, tank, fighter or bomber with your fucking rifle. If the government gave a shit about your worthless ass, they'd get you. Period. End of discussion.