If you read the article, you would find that discrimination in employment and housing isn't limited to who gets to be a CEO, that was just synecdoche. I'm energetically disagreeing that the primary worry (or even the secondary worry) of people getting discriminated against for their race is the threat of physical violence.

The article is written from a white person's perspective and doesn't delve deeply into whether discrimination is equal against all foreigners or whether it is worse for some ethnic groups over others, my comments were a direct response to asdfologist's comment.

It seems wrong to conclude that violence would not be a possible concern though, there are many minority groups across the globe for whom it is a very serious concern, though I don't know the situation in Japan.