So if someone was abused in your city, someone you did not even know, or at that time was not even born and they came back to murder everyone, including your family, would you truly just say: Well I can understand that, lets forgive that person, we are kinda all at fault here and lets built a grave for them?

I mean if she had come back and hurt those people that have hurt her directly then maybe one could feel a bit more sympathy with her motives, but she hurt anyone just because they were born in the country, even if they were not even alive at that time. Your past does not in any way ever absolve you from such horrible crimes.

In the end Hien can only do so much. He should not ignore the problem and should try to change it but hoping that something like that never really happens again is probably too much.