The plural of anecdote is not data. And Korean people have been oppressed in the past, and no attempt to rectify the situation has been made by the government. That's why a lot of Korean people born in Japan gravitate towards less savoury activities.
Plus, Japanese took Chinese and Korean women and forced them to become whores or "comfort women" for the Japanese soldiers stationed in the mainland. As recently as 2014 the Prime Minister of Japan said there was no evidence that the Japanese government took "slaves".
And the second point, which you don't touch upon, is if you look even vaguely Japanese at all, you are expected to follow all the social norms. If you don't, they give you a pass.
Plus, Japanese took Chinese and Korean women and forced them to become whores or "comfort women" for the Japanese soldiers stationed in the mainland. As recently as 2014 the Prime Minister of Japan said there was no evidence that the Japanese government took "slaves".
And the second point, which you don't touch upon, is if you look even vaguely Japanese at all, you are expected to follow all the social norms. If you don't, they give you a pass.