Students and shooting survivors Tyra Hemans and Emma Gonzalez (3rd from R), from Marjory Stoneman Douglas High School in Parkland, Florida, and 11-year-old Naomi Wadler of Alexandria, Virginia (2nd from R), sing along with other students and shooting survivors at the conclusion of the “March for Our Lives” event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Aaron P. Bernstein