Your analysis is utterly useless in preventing this type of tragedy in the
future. You have essentially said there is nothing that can be done. Good job,
your suggestion to 'give up' we can't stop these people should be of real
comfort to the families of the victims and anyone affected by this act. Bravo.
And being called "big eared" is not the same as being racially discriminated
against, you're a naive person. And there have not been millions of South
korean Immigrants growing up in the south, that is the whole point.
Additionally, the best cure for this is personal responsibility, if something
like this happens to you, do not expect the police to save you, you need to
take action for yourself, like those on United 93 when they said "let's roll",
otherwise you are the victim. Better to die doing something than die lined up
on a wall waiting while the killer reloads and continues executing others.