>>69
こんなのを見ると参考になるよ。
https://en.wikipedia.org/wiki/Apartheid

> Apartheid was a system of institutionalised racial segregation and
discrimination that existed in South Africa from 1948 until the early 1990s.[note 1]

Josen, 除鮮, is a word of discrimination and elimination Korians from people.
除 is a Kanji that means to eliminate, and 鮮 is a Kanji, 鮮 of 朝鮮. And also
Josen is from a Kanji word 除染, elimination of radioactive matereals.
So This is too offencive word in Japanese.