My parents inculcated in me and my two siblings a particular sense of racial kinship: in our dealings with the white world, we were encouraged to think of ourselves as ambassadors of blackness. Our achievements would advance the race, and our failures would hinder it. The fulfillment of our racial obligations required that we speak well, dress suitably, and mind our manners. In our household we felt tremendous pride in the attainments of blacks, and we took personally their disgrace. My father and mother loved to regale us with stories about the accomplishments of Jackie Robinson and Wilma Rudolph,…