(Whitney Shefte, Jorge Ribas/The Washington Post)
Parkland student David Hogg: 'Blood is being spilled on the floors of American classrooms.'
David Hogg is a senior at Marjory Stoneman Douglas High School in Parkland, Fla. He started recording footage on his phone during the shooting. Speaking to The Post, Hogg urged Congress to take action on gun violence in schools.
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