Also, their sincerity aside, could this be because South Koreans are somewhat expecting or anticipating a backlash against Koreans similar to the spate of anti-Americanism which cropped up in South Korea after two children were accidentally run over by American soldiers? The absurd thing is, Americans are least likely of all to blame ethnicity in a situation like this, but we are most likely to be called racist.
We know exactly who is responsible for this abominable event...
...the NRA and the gun manufacturers.
</sarcasm>
Especially from the Europeans (accusing Americans of being racist) and Latin Americans (who still have a de facto caste system--look at their political leaders and telenovela actors).
comment 30 (on this thread).