"We who were children in the 1950s, adolescents in the 1960s, and young adults in the '70s-we are a thing. We practiced what to do in case of nuclear war. We watched American officials-southern sheriffs and governors-openly defend racism. We went through the Cuban missile crisis and the Kennedy assassination and the War in Vietnam. We slept with boyfriends we weren't about to marry and took drugs for fun and declared ourselves liberated from artificial...