https://en.wikipedia.org/wiki/Same-race_discrimination

One form of racism is same-race discrimination, wherein the perpetrator and the object of the discrimination are of the same racial group.

https://www.eeoc.gov/racecolor-discrimination#:~:text=Discrimination%20can%20occur%20when%20the,the%20same%20race%20or%20color.

Discrimination can occur when the victim and the person who inflicted the discrimination are the same race or color.