Young survivors of Wednesday's school shooting in Florida have announced a national march on Washington next month, demanding action from lawmakers on gun control.
Seventeen students and staff died in the shooting in Parkland, Florida last week.
But as Harry Horton reports from Washington, the students-turned-activists will likely face an uphill struggle in their battle to bring about new gun laws.
IN: "President Donald Trumo..."
OUT: "...to happen"
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