A year after the school shooting in Parkland, Fla.
Students are brought out of the Marjory Stoneman Douglas High School after a shooting at the school that killed 17 people on Feb. 14, 2018 in Parkland, Fla.(Joe Raedle / Getty Images)
Medical personnel tend to a victim outside Marjory Stoneman Douglas High School in Parkland on Feb. 14, 2018.(John McCall / Sun Sentinel)
Mechelle Boyle hugs a student as they wait for news after the mass shooting at Marjory Stoneman Douglas High School.(Joel Auerbach / Associated Press)
Students gather Feb. 16, 2018, at a memorial in Parkland, Fla., to remember those who were killed and injured in the shooting.(Carolyn Cole / Los Angeles Times)
Shooting suspect Nikolas Cruz, 19, is seen on a closed-circuit television screen during a bond hearing Feb. 15, 2018, in Fort Lauderdale.(Pool Photo)
Thousands gather for a vigil at Pine Trails Park in Parkland, Fla., to remember those who were killed and injured in the shooting.(Carolyn Cole / Los Angeles Times)
Majory Stoneman High School student Cameron Kasky addresses students as they rally Feb. 21, 2018, at the school following a county-wide school walkout.(Rhona Wise / AFP/Getty Images)
Students are greeted by law enforcement as they head back to school Feb. 28, 2018, at Marjory Stoneman Douglas High School. With a heavy police presence, classes resumed for the first time since 17 people were killed.(Mike Stocker / Sun Sentinel)
A student gets a hug as she leaves Marjory Stoneman Douglas High School after attending classes for the first time since the shooting.(Joe Raedle / Getty Images)
Students rally in front of the White House on March 14 to protest gun violence.
(Carolyn Kaster / Associated Press)
Protesters fill the streets of Washington during the March for Our Lives rally to demand stricter gun control laws on March 24, 2018.(Olivier Douliery / Abaca Press)
Andrew Pollack, flanked by his sons, speaks during a listening session on gun violence with President Trump, teachers and students at the White House on Feb. 21, 2018. Pollack’s daughter Meadow was killed in the Marjory Stoneman Douglas High School shooting in Parkland, Fla.(Mandel Ngan / AFP / Getty Images)
Parkland shooting survivors Emma Gonzalez, David Hogg and Cameron Kaskey hold a news conference June 4, 2018, to announce a 20-state tour dubbed “The March For Our Lives: Road to Change,” where they planned to meet with young voters and campaign to end gun violence.(Ellis Rua / Miami Herald)