Want some scary racism, check out the ingrained racism between Hutus and Tutsis in Rwanda.
There is some serious black on black racism there. An American journalist who went to discover his roots and write about the experience got caught up in in, and almost got butchered because his physical attributes looked like the wrong tribe when he was in the wrong place.
He didn’t realize the extent of the racism and tribalism there. He thought they were all going to be brothers because they had a common skin pigmentation.
Tribalism AND racism.