I think you’re lacking some context. What I was talking about is a general attitude, and one towards blacks and whites in Asia, not other Asians. Sure, there are isolated, specific incidents of racism, but in the large-scale, people of a nation will not react with overwhelming discrimination against people that look very different from themselves. It may be more of intrigue, and at the worst condescension and patronization, which I wouldn’t really consider racism. Racism toward different sub-ethnic groups of Asians is different. In that case, they look similar, but discrimination is of a more subtle nature which can make it more heated.
And of course. Racism in the U.S has evolved to mean “institutionalized racism against blacks” more than anything else. Hell, Steve Harvey has made directly racist comments towards Asians more than once, and no one reacted at all. But if it had been a role reversal, or white-on-black racism, people would’ve exploded. So from this example alone we really see the serious extent of racism towards blacks specifically in the U.S for it to elicit such intense outcry. This disparity in reaction has show that “Racism” has come to mean one race perpetuating dominant and “negative” cultural stereotypes, as well as expressing overt discrimination, of another race.