David Hogg, a student journalist at Marjory Stoneman Douglas High School in Parkland, Florida, and a survivor of last month's school shooting, describes the experience of appearing at the March For Our Lives event in Washington, D.C. We also hear from Alex Wind, a junior at Marjory Stoneman Douglas, and Mya Middleton, a 16-year-old from Chicago, who was a victim of an armed robbery. Air Date: Mar 25, 2018