Wgtd's The Morning Show With Greg Berg

Dave Cullen's riveting book "Parkland: Birth of a Movement" chronicles the impressive efforts of a small group of students from Marjory Stoneman Douglas High School to change the national conversation about gun control in the wake of the shooting on Feb. 14, 2018 that left 14 of their school mates dead (along with three staff members.)   Cullen wrote one of the most definitive books about Columbine, the first high-profile mass shooting at a U.S. school 19 years earlier.