Racialism is is the idea that Homo sapiens can be divided into separate social categories or "races" based on a variety of relatively arbitrary society-specific

Racialism is is the idea that Homo sapiens can be divided into separate social categories or "races" based on a variety of relatively arbitrary society-specific markers: religion, kinship, skin color, and so on. The ideas of race is tied up with the idea of ancestry (and nation), but the biological link between genetic ancestry and racial identities is very ambiguous. https://www.washingtonpost.com/news/wonk/wp/2014/12/22/a-lot-of-southern-whites-are-a-little-bit-black/?utm_term=.ecd94270b337 https://www.washingtonpost.com/news/wonk/wp/2014/12/22/a-lot... Racism is the discriminatory or prejudicial treatment of people based on these socially-salient-but-mostly-arbitrary social categories. This is pretty basic stuff, really.