> It's quite well known that SF is full of subtle racism towards Asians despite ironically being full of Asians.
It's the same in Asia. Except not so subtle.
I think that the history, in both cases, is that imperialism moved groups of people around the world in response to specific labor shortages. That has left a lot of communities that are still concentrated in whatever economic niche the British dropped them in, and who the "locals" still resent sharing "their" country with.
I trust that the need for scare quotes is obvious when discussing an English speaking community that considers itself local to a part of North America named San Fransisco.
Actually calling those racism is a bit overblown compared to lynchings or police shootings. It's mostly biases and stereotypes affecting how people treat strangers, and Asians suffer silently in those situations like many other groups.
Think of the recent issue where a black woman and her child was denied service at a restaurant due to "dress code", if it didn't happen that a white kid had similar clothing as her kid, she wouldn't have realized it was racial profiling.