救援物資沸かせたら韓国人に奪われたんだが:
The rescue supplies – as soon as we tried to boil/distribute them, they got snatched away by Koreans.
中国韓国の奴らはぶしょっは奪うものがデフォなのか?:
Do Chinese and Korean slaves always grab things first?
They are generalizing players of specific nationalities (Chinese, Korean) by saying they “always steal.”
This generalization of negative traits based on nationality or ethnicity constitutes prejudice and discrimination.
In other words, because it evaluates an entire group negatively, it can be considered racist.