PASTOR PATRINELL WRIGHT was just a 20-year-old country girl from Carthage, Texas, who didn’t know what she was getting into when she migrated to Seattle in 1964. She grew up one of seven children in the Walnut Grove community, to be exact, a nearby farming enclave designated for blacks. That’s how it was in Southern towns back then. If you were black, you knew where you belonged, and it sure wasn’t around white people, unless you happened to be working for them. Seattle had its own form of segregation, with blacks clustered mainly in the city’s Central District because of...