I don’t know if I would call it xenophobia, I think rather the idea of outgroup would be more accurate. I noticed, that if your language was not utterly perfect, you were automatically outgroup.

This is true. I'd say maybe there's a fair bit of xenophobia mixed in? 

I don’t know if you could say racist. I found that there is a definite, 

 sort of vibe. It didn’t have much to do with race, but more to do with homogeneous culture of the place. For instance, if you are in Japan you are either a Japanese or an outside person (gaijin). It is completely either, or without graduations. Oh, sorry, there were half’s and they were know as exactly that, 

econ

Is Racism Enabled by Capitalism, or the State? | The Libertarian Institute

Undisciplined

I don’t know if you could say racist. I found that there is a definite, *we are us and you are not one of us* sort of vibe. It didn’t have much to do with race, but more to do with homogeneous culture of the place. For instance, if you are in Japan you are either a Japanese or an outside person (gaijin). It is completely either, or without graduations. Oh, sorry, there were half’s and they were know as exactly that, **half**.