Chinese-American waitress Ruth Lee with a flag of China to make clear she is chinese and no Japanese and avoid harrasment, December 1941 [1600×1277]

These kind of sentiment still exist, because asians living european countries and in usa asian people have their flag poled in their house or patched in their shirts to differentiate themselves from chinese because of covid-19 pandemic.

Those Sikhs harassed (and I think one killed) after 9/11 could have used some obvious identification.