People leave a graduation ceremony for Marjory Stoneman Douglas seniors, Sunday, June 3, 2018, in Sunrise, Fla. The senior class from Florida's Parkland high school where a gunman killed 17 people in February received diplomas Sunday and heard from surprise commencement speaker Jimmy Fallon, who urged graduates to move forward and &quot;don't let anything stop you.&quot; (AP Photo/Lynne Sladky)