Well, I'm glad that's cleared up. They were actually killed by ...guns. And American fundamental rights.
Tom Plate [send him mail] writes
So let's just disregard all the hoopla about the race of the student responsible for the slayings. These students were not killed by a Korean, they were killed by a 9 mm handgun and a .22-caliber handgun.Plate: Let's lay down our right to bear arms - CNN.com
Earlier in the article, Plate had written "Ban Ki-moon is also Korean! Our brilliant new United Nations secretary general has not only never fired a gun..." (but had a engineered some kind of bogus peace plan for Sudan, blah blah blah.)
That being the case, I'd like to see some evidence that Ban-Ki Moon has never fired a gun.
It's true that South Korea has gun control as well as universal conscription. That may have been a factor in the one of the worst mass killings in history, the 57 people killed by Woo Bum Kon, a South Korean policeman who had taken guns from a police armory.