There's only ever focus in racism by whites because we live in a diverse place with self hating anti-white bigots in control. Why do you never hear about racism in other countries? Take a look at racism in Japan, they can't stand Koreans and want to keep their country Japanese which I highly respect. Why can't whites do the same? Why don't Indians talk about the caste system that still exists today?
You respect bigotry and institutionalised racism?
Japan however is interesting because what we would see as racism they do not, their culture is based on honour and etiquette which extends to foreigners where they see foreigners as honoured guests, but when that honoured guest becomes a permanent immigrant their cultural history and etiquette see this as rudeness on the part of the guest, a bit like someone outstaying their welcome in a Western home.
As regard the Chinese and Koreans, we have to consider the historical and cultural record of these nationalities to appreciate the ingrained animosities between them. The Japanese constitution states that all people are equal under the law, and they cannot be discriminated against politically, economically, or socially on the basis of race, belief, sex, or social or other background, the problem is that there is little actual legislation to back that up. In any case Japan is a great place to visit for the non-Japanese, but not so nice to stay if you cannot accept their foibles with regard to their culture.
As for the Indian Caste system, you clearly don't know what you are talking about as the caste system is a very contentious and hotly debated issue in India, with a whole range of reforms and anti discrimination measures being instituted since the 1950's. To say Indians do not talk about the caste system is simply wrong, in many way they talk about little else.