Several dozen high school students from in and around Washington, D.C., staged a 'lie-in' demonstration in front of the White House to protest against gun violence in schools days after a gunman killed 17 people at a Florida high school.
The suspect in the Parkland shooting, Nikolas Cruz, 19, faces multiple murder charges in the deaths of 14 students and three staff members at Marjory Stoneman Douglas High School, and the wounding of more than a dozen others in a rampage that eclipsed Columbine as the country's worst mass shooting at a high school.