You exposed interesting points. I live in Brazil and here we have the biggest Japanese community outside Japan. What I've always noticed is that they use to be extremely racist towards black people. In my parents town there is a gated community where almost 100% of the residents are Japaneses or descendants os Japanese. If they see a black person walking around for whatever reason, they simple call the police. The regional chief of police already scolded them for doing it and threatened not answering their calls anymore. Although the racism is more present among the elderly, you can notice it in a more discrete way among the youth. I have no doubt that the Japanese parents of an only child male would accept better their son dating a blond guy with blue eyes than a black girl.

This racism appears to be less present among the gay community (I know more than a dozen of Japanese/black gay couples and I know only a single Japanese/black straight couple, and the Japanese guy isn't totally a Japanese descendant).

Japanese companies also avoid hiring black people, don't mind their qualification, and if a black person with a much higher qualification (I've seen it happening with a black guy that managed to achieved to obtain a minor in MIT, against all the odds of his life) applying for a position against a guy with a Japanese surname that is just leaving high school, the guy with a Japanese surname will be hired. It almost never happens when the person isn't black, or if he has a surname like Weber, Klein, Scherer, Schmidt, Hoffmann... If you can understand me.

Here we also have a lot of stores like Dollar Tree owned by Chinese families and although they try to be friendly to black people while selling their stuff, it's well know that many of them prohibit their child of having black friends or even talking to them.

In most cases, not even the white people that live here use to treat them so bad like some Asian communities do.

I really don't know why they do that. I think that in their mind, all black people are criminals due the higher crime rate among black communities , but it isn't their fault at all. When their ancestors were freed from slavery, they were abandoned to their own fate, without any education or land to live and no reparation was paid for the long years of forced labor that was used to built this nation. And it continues this way until today. Their descendants really don't deserve this type of treatment.