"A lot of the people I'm friends with are from Parkland and a lot of them go to FSU," he said. "This is the second time it's happened -- and no one I know wants to go back to school."
"I'm especially worried for my brother because most mass shooting happen in middle school, my brother's going into middle school," said 9-year-old Christian Salala.
"Students should go to school and feel like they are going to live through that day and have their lives protected," said Nicholas, adding the fear is a constant distraction and one of the many reasons they will continue to demand change.
Jimmy Kimmel gave an emotional speech Wednesday in a plea for stricter gun-safety laws.
The lives lost included a beloved football coach who died shielding students and a junior cadet pointing others to safety when he was shot.
Friday marks the two-year anniversary of the deadly shooting at Marjory Stoneman Douglas High School in Parkland, Florida, and a powerful new documentary called "After Parkland" will soon be streaming on Hulu.