Holding seminars and going back and forth. Risking your own life at the borders to help those in need. For everyone to do the best at what they can do. Or perhaps, whenever there is a problem of people suffering war is the action. I hope as human beings we've grown up beyond that.
Indifference is also a sin of omission.
Basically omitting a whole race by not seeing their suffering. Almost saying that they are not part of the family of man. I hope we've grown up beyond that as well. If you haven't asked yourself that question, you're definitely doing the wrong thing. In the final analysis, that is between the two Koreas.