Peace Pagda for Dunblane Shooting Victims

Florida's Marjory Stoneman Douglas High School prepares to reopen two weeks after 17 people were killed there in a shooting that has spurred calls for stricter gun control across the country

Police secure the scene at Great Mills high school after a shooter at the Maryland high school wounded two students

CLEAN: Shows exterior shots people visiting memorial outside school to victims of Ulvade school mass shooting, looking at crosses with victims names written on them. The town of Uvalde in Texas is in mourning, after America's deadliest...

Crowds of Mourners at Newtown Christmas Tree

Candlelit Vigil Shots at Newtown Church

People Gathered for Mass Vigil in Newtown

Candlelit Vigil Voxpop outside Newtown Church

Hundreds Gather at Church at Newtown Church

Aftermath of Sandy Hool School shooting

Exterior views of the intitial two Virginia Tech murders, West Ambler Johnston Hall / makeshift memorials for massacre victims / students walking into Hall. Site of Virginia Tech massacre on April 17, 2007 in Blacksburg, Virginia...

Wendell Flinchum, Chief of the Virginia Tech Police department, gives a statement on the Virginia Tech massacre. Virginia Tech massacre statement by police chief on April 16, 2007 in Blacksburg, Virginia (Footage by Getty Images)

Exterior views of Norris Hall where massacre took place / ambulance in front of Hall, police activity / students on campus / open windows of Hall classroom. Norris Hall, scene of Virginia Tech Massacre on April 16, 2007 in Blacksburg,...

Various views of the Virginia Tech campus / students walking on campus. Virginia Tech campus after massacre on April 17, 2007 in Blacksburg, Virginia (Footage by Getty Images)

Students on Virginia Tech campus, man sitting under tree reading book / American flag at half-mast / memorial in front of Burruss Hall for massacre victims. Memorial for Virginia Tech massacre victims on April 17, 2007 in Blacksburg,...

State police cars guarding the War Memorial at Virginia Tech / convoy of police cars driving along campus at dusk. State police at Virginia Tech after massacre on April 16, 2007 in Blacksburg, Virginia (Footage by Getty Images)

Memorial in front of Burruss Hall for Virginia Tech massacre victims / mourners at memorial / front view of Burruss Hall with flags at half-mast. Memorial for Virginia Tech massacre victims on April 17, 2007 in Blacksburg, Virginia...

Virginia State Police Superintendent, Colonel Steve Flaherty, makes comments about the Virginia Tech massacre. Police make Virginia Tech massacre statement on April 16, 2007 in Blacksburg, Virginia (Footage by Getty Images)

outside the first funeral following the Sandy Hook school massacre First Funerals after school shooting on December 17, 2012 in Newtown, Connecticut (Footage by Getty Images)

With messages of support still covering the school fence the students of Marysville-Pilchuck High School try to get back to some semblance of normality following the cafeteria shooting in which five pupils died. The tomahawks football...

Nicole Hockley, mother of 6-year-old Dylan who was killed by Adam Lanza at Sandy Hook Elementary School comments on the Marysville-Pilchuck High School shootings while campaigning for I-594 gun control initiative in Washington state.

CLEAN : Police evacuate church in US

Dunblane Cathedral & Town After Shootings

Floral Tributes for Victims of Dunblane Shootings