March for Our Lives: Students press for gun control in Columbus

Students from Florida's Marjory Stoneman Douglas High School arrive in Washington ahead of Saturday's gun control rally, March for Our Lives. Rallies are taking place in about 800 cities around the world.In Washington, hundreds of thousands of protesters are expected to attend the march. The students will be accompanied by a number of celebrity performers, including Ariana Grande, Jennifer Hudson, Common, Lin-Manuel Miranda, Miley Cyrus, Demi Lovato and Vic Mensa.In a statement, the organizers s