Quoctrung Bui

The Don Drapers of the world used to marry their secretaries. Now they marry fellow executives, who could very well earn more than they do. With more marriages of equals, reflecting deep changes in American families and society at large, the country is becoming more segregated by class.

In a move with little precedent in professional sports, the NBA is putting the weight of its multibillion-dollar brand and the prestige of its star athletes behind a series of television commercials calling for an end to gun violence.