They share the same language, religion, music, lifestyle, etc. They are racially indistinguishable but culturally different. When one ethnic group decides to eliminate another ethnic group within a geographical area. The holocaust, during which 6 million Jews were killed. Primordalist Perspective racial and ethnic stratification s are a natural phenomenon of society.
People innately favor people like themselves.
They share a natural racial and cultural bond and naturally feel comfortable around one another. They think they are superior to other groups of people. Racist people have little education and as children they have cold, authoritative parents. They vent this built up anger on other minority groups. Adorno derived this information from studying members of the KKK and Nazi Germans.