Kind of a taboo subject. In the UK, Indian vs Pakistani prejudice is a major problem but most whites are unaware of it.

>Racism is discrimination according to race, not innocently making fun of our differences, as here.

This is racial discrimination.

In fact, racism is the assignment of a non-defining attribute to an entire "race". This is true for even potentially a positive attribute, for example it is still racist to say: "black people are good at basketball" or the trope of the "latin lover" or "asians are good at math"

"Racism is the belief that groups of humans possess different behavioral traits corresponding to inherited attributes and can be divided based on the superiority of one race or ethnicity over another. It may also mean prejudice, discrimination, or antagonism directed against other people because they are of a different ethnic background." [1]

[1] https://en.wikipedia.org/wiki/Racism#:~:text=Racism%20is%20t...

You don't get to decide what the targets of racism perceive as racist.