"From two survivors of the Parkland, Florida, shooting comes a declaration for our times, and an in-depth look at the making of the #NeverAgain movement. On February 14, 2018, seventeen-year-old David Hogg and his fourteen-year-old sister, Lauren, went to school at Marjory Stoneman Douglas High School, like any normal Wednesday. That day, of course, the world changed. By the next morning, with seventeen classmates and faculty dead, they had joined...