Survivor marks 6 minutes of strength and silence at rally

Emma Gonzalez, a survivor of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla., cries as she stands silently during the March for Our Lives rally on Saturday in Washington.

Chin high and tears streaming, Florida school shooting survivor Emma Gonzalez stood silent in front of thousands gathered for the March for Our Lives rally in Washington, D.C.