>>420 may be Korean's writing.
We Japanese never say "whom blood became dirty"
I never hear these word "dirty blood" also in 2ch.
We Japanese is inconvenienced by Korean's crime, but it is their behavior, not their blood.
Korean want to say"We are innocence , but persecuted"
But truth is that Korean afflict Japanese by criminal behavior.
Fake persecuted story is work for them.
So, they perform double role in various scenes.
God bless you.