Well done. I'm promoting a word for this: eracism. It used to be done by white racists who just left out the people they were prejudiced against. Now it's done by racists of all hues.

https://medium.com/a-universalist-in-an-identitarian-age/eracism-racism-by-omission-the-outlaw-josie-wales-and-the-education-of-little-tree-30f813ba807c