ClandestinePzpoorly made arguments
1. See my previous post about the conditions of society when the second amendment was ratified. The chances of a man killing 30 people with a front loading musket in under an hour are pretty slim, and the idea that it could be done faster would have been foreign at the time. In the future when death rays are readily accessible to every person in America, I hope that our second amendment rights are protected so that everyone who ever gets angry can kill everyone around them because that's how washington would have done it.
2. Chinese people not owning guns can just as easily be tied to the fact that they spent an entire generation trying to build a perfect communist society. Saying it's solely for the purpose of oppressing its people might help Kissinger get off, but there is an entire history and ideology that you seem to be ignoring.
3. It's already been observed and noted that it's a lot harder to kill one person (let alone droves of them) with a knife. If you'll look back to the stats that whatisausername posted, the lion's share of homicides are committed without pre-meditation and with use of a gun. Yes if you really want to kill someone you can do it with an icicle, or a bobby pin, or your bare fucking hands, but that doesn't mean that just because it's possible means you should be able to down 20 people in that same time frame on a whim.
4. I'm not even going to address the "you're just on a knee-jerk reaction" bit with any sort of dignity. I said the exact same thing on natf2 when Holmes shot up a theater, and I voted for a representative that believes that banning civilians from owning 900 m/s muzzle velocity fully automatic assault rifles doesn't actually equate to meaningful gun control.
5. Your refutation of the chinese cases is on such shaky logic that I wonder if you even read that to yourself. It's the exact same reasoning that leads people to say IF THEY WANT A GUN THEY'LL GET A GUN WHOOPS WE CAN'T DO ANYTHING which then leads to preserving a status quo which involves orders of magnitudes more gun violence per year than other civilized nations. Arguing over whether or not gun control would have prevented this is almost as irrelevant as well because people will always swear by the GET ONE IF YOU WANT IT HARD ENOUGH logic. There's no way to tell if actual gun control laws could have prevented this, but what I said previously and what mustard said are both true. The prevalence and ease of access to deadly firearms is symptomatic of a nation that refuses to tackle the issue whatsoever (probably due to widespread allegiance to outdated ideals/logic of futility) and it is clear that we need to stop fetishizing weaponry as a society to see real change.