Jimmy Fallon used his "Tonight Show" platform to call on gun control advocates to participate in this Saturday's March for Our Lives demonstrations. The main march will be held in Washington, D.C., with more than 800 related events taking place around the world. March for Our Lives is a demonstration created and organized by #NeverAgain. It's a group of students who survived the February 14 shooting at Marjory Stoneman Douglas High School in Parkland, Florida.
