I certainly understand the history of what Japan has done in Korea.
For present purposes though - your view is false. Yes, Japan invade Korea 500 years ago (or even 100+ years ago). No one should forget that. But what is happening TODAY? I don’t live in 1500’s - I live in 2010.
How many Koreans died in the last 10 years from man-made starvation? Execution? Forced Labor? How many will die TODAY in the North? And who is responsible for that? Who could end that situation immediately if they wanted? CHINA.