parkland

In March 24, 2018, Emma Gonzalez, a survivor of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla., closes her eyes and cries as she stands silently at the podium for the amount of time it took the Parkland shooter to go on his killing spree. (AP Photo/Alex Brandon)

Noah King, 9, of Belmont, Mass., center, steps on stage to greet Marjory Stoneman Douglas High School students, from the left, Emma Gonzalez, David Hogg, Cameron Kasky, Alex Wind, and Matt Deitsch, during a panel discussion about guns, Tuesday, March 20, 2018, at Harvard Kennedy School's Institute of Politics, in Cambridge, Mass. The Feb. 14, 2018 attack in Florida killed 17 people, 14 of them students. The students have become vocal advocates for stricter gun laws. (AP Photo/Steven Senne)

Florida students return to ‘picture of education in fear’

Police walk outside Marjory Stoneman Douglas High School in Parkland, Fla., Wednesday, Feb. 28, 2018. Students returned to class for the first time since a former student opened fire there with an assault weapon. (AP Photo/Terry Renna)

This photo taken Tuesday, Aug. 29, 2017, shows a Dick's Sporting Goods store in Miami. Dick's Sporting Goods announced Wednesday, Feb. 28, 2018, that it will immediately end sales of assault-style rifles and high capacity magazines at all of its stores and ban the sale of all guns to anyone under 21 years old. The announcement comes two weeks after the school massacre in Parkland, Fla. (AP Photo/Alan Diaz)

Students gather during a vigil at Pine Trails Park for the victims of the Wednesday shooting at Marjory Stoneman Douglas High School, in Parkland, Fla., Thursday, Feb. 15, 2018. Nikolas Cruz, accused of using a semi-automatic rifle in a shooting at a Florida high school, confessed to carrying out the killing and carried extra ammunition in his backpack, according to a sheriff's department report released Thursday. (AP Photo/Brynn Anderson)