Then they're afraid people would take revenge on them because they're Koreans who did not kill those students. Now, who is the racist one, tell me please?
That´s the point!!! You see, I´m glad to hear that an american citizen like you think in that way, but, sadly, there are a few of your fellow countryman and countrywoman which don´t share your point of view. If you want an explanation to understand korean community behavior, you should review recent american history. How we could forget americans behavior after 9/11 (a few of them of course), when anyone looks like an arab were considered as a terrorist, including those who have been living in american soil for generations.
I believe that kind of behavior it´s pretty normal into societies whose citizen have suffered traumatic episodes like this one. When people don´t have a logical anwser to justify this kind of senseless event, they always look for a scapegoat, and I think that korean community is trying to avoid it before it could be too late.To make my point clear, you should remember what happened in Columbine, where Marylin Mason were pointed out as the responsable for that massacre, only because those guys listened his music.
If you want to understand it, you should wear their shoes, I mean think as an immigrant.