(CNN)As survivors of Wednesday's school shooting demand that it be the last such massacre, marches are being planned around the country to amplify the students' message that action must be taken to end gun violence.
The marches share one mission: to put pressure on Congress to pass gun reform and make schools safer.
Fourteen students and three teachers were killed and many injured when a gunman opened fire at Marjory Stoneman Douglas High School in Parkland, Florida last week.
The shooting was at least the eighth at a US middle or high school this year and has reignited a debate over gun control.
Read the rest of this story from Susannah Cullinane on CNN here.