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Columbine High School Massacre

A look back at Columbine High School shooting on its anniversary

Littleton, Colo., residents stand near a carpet of flowers on April 21, 1999, as they mourn the lives taken at Columbine High School. Two heavily armed Columbine students killed twelve fellow students and a teacher and injured at least twenty others in a shooting on April 20, 1999, before committing suicide.
Littleton, Colo., residents stand near a carpet of flowers on April 21, 1999, as they mourn the lives taken at Columbine High School. Two heavily armed Columbine students killed twelve fellow students and a teacher and injured at least twenty others in a shooting on April 20, 1999, before committing suicide.
HECTOR MATA, AFP Via Getty Images
Police stand outside the east entrance of Columbine High School as bomb squads and SWAT teams secure students on April 20, 1999, in Littleton, Colo., after two masked teens on a "suicide mission" stormed the school and blasted fellow students with guns and explosives before turning the weapons on themselves.
Police stand outside the east entrance of Columbine High School as bomb squads and SWAT teams secure students on April 20, 1999, in Littleton, Colo., after two masked teens on a "suicide mission" stormed the school and blasted fellow students with guns and explosives before turning the weapons on themselves.
MARK LEFFINGWELL, AFP Via Getty Images
Students from Columbine High School in Littleton, Colo., watch as the last of their fellow students are evacuated from the school building on April 20, 1999, following a shooting spree at the school.
Students from Columbine High School in Littleton, Colo., watch as the last of their fellow students are evacuated from the school building on April 20, 1999, following a shooting spree at the school.
MARK LEFFINGWELL, BOULDER DAILY CAMERA/AFP Via Getty Images
Students hug each other in the parking lot on April 21, 1999, outside Columbine High School in Littleton, Colo., the site of a school shooting on April 20, 1999 where 12 students and a teacher were killed by two students in a suicide mission. At least twenty others were wounded in the attack.
Students hug each other in the parking lot on April 21, 1999, outside Columbine High School in Littleton, Colo., the site of a school shooting on April 20, 1999 where 12 students and a teacher were killed by two students in a suicide mission. At least twenty others were wounded in the attack.
HECTOR MATA, AFP Via Getty Images
Amanda (L) and Jessica Goldsby from Littleton, Colo., approach Columbine High School on April 21, 1999, to place flowers to honor those who died in the shooting at the high school the day before. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage suspects, were killed in the rampage of gunshots and explosions at the school in suburban Denver.
Amanda (L) and Jessica Goldsby from Littleton, Colo., approach Columbine High School on April 21, 1999, to place flowers to honor those who died in the shooting at the high school the day before. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage suspects, were killed in the rampage of gunshots and explosions at the school in suburban Denver.
HECTOR MATA, AFP Via Getty Images
Students run from a school shooting at Columbine High School on April 20, 1999, that resulted in 15 deaths, including 12 students, one teacher and the two gunmen who were also students at the school.
Students run from a school shooting at Columbine High School on April 20, 1999, that resulted in 15 deaths, including 12 students, one teacher and the two gunmen who were also students at the school.
Mark Leffingwell, AFP/Getty Images
Students run out of Columbine High School as two gunmen went on a shooting spree killing fifteen people, including themselves on April 20, 1999.
Students run out of Columbine High School as two gunmen went on a shooting spree killing fifteen people, including themselves on April 20, 1999.
Steven D Starr, Corbis Via Getty Images
Students gather at the Light of the World Catholic Church for a memorial service honoring the victims of the Columbine High School shooting. On April 20, 1999, two students at Columbine High School in Littleton, Colo., went on a shooting spree, killing 12 students and one teacher before taking their own lives. 

The victims were: 
Cassie Bernall, 17
Steven Curnow, 14
Corey DePooter, 17
Kelly Fleming, 16
Matthew Kechter, 16
Daniel Mauser, 15
Daniel Rohrbough, 15
William 鈥淒ave鈥 Sanders, 47
Rachel Scott, 17
Isaiah Shoels, 18
John Tomlin, 16
91影视 Townsend, 18
Kyle Velasquez, 16
Students gather at the Light of the World Catholic Church for a memorial service honoring the victims of the Columbine High School shooting. On April 20, 1999, two students at Columbine High School in Littleton, Colo., went on a shooting spree, killing 12 students and one teacher before taking their own lives. The victims were: Cassie Bernall, 17 Steven Curnow, 14 Corey DePooter, 17 Kelly Fleming, 16 Matthew Kechter, 16 Daniel Mauser, 15 Daniel Rohrbough, 15 William 鈥淒ave鈥 Sanders, 47 Rachel Scott, 17 Isaiah Shoels, 18 John Tomlin, 16 91影视 Townsend, 18 Kyle Velasquez, 16
David Butow, Corbis Via Getty Images
Kit Harmon comforts her daughter Jessica Cave, a sophomore at Columbine High School, while sitting near the growing pile of flowers left by mourners near the school on April 21, 1999, in Littleton, Colo. Fifteen people were killed in the April 20 shooting, including the two gunmen.
Kit Harmon comforts her daughter Jessica Cave, a sophomore at Columbine High School, while sitting near the growing pile of flowers left by mourners near the school on April 21, 1999, in Littleton, Colo. Fifteen people were killed in the April 20 shooting, including the two gunmen.
MARK LEFFINGWELL, AFP Via Getty Images
Police officers prepare to search for bombs in the Columbine High School area in Littleton, Colo., on April 21, 1999. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage gunmen, were killed in the rampage of gunshots and explosions at Columbine High School in Denver on April 20, 1999.
Police officers prepare to search for bombs in the Columbine High School area in Littleton, Colo., on April 21, 1999. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage gunmen, were killed in the rampage of gunshots and explosions at Columbine High School in Denver on April 20, 1999.
HECTOR MATA, AFP Via Getty Images
At a candlelight vigil at the Denver Civic Center Amphitheater for victims of the Columbine High School shootings, Tamara Tatar, an 18-year-old senior at Ponderosa High School, writes her sentiments on a memory wall on April 21, 1999.
At a candlelight vigil at the Denver Civic Center Amphitheater for victims of the Columbine High School shootings, Tamara Tatar, an 18-year-old senior at Ponderosa High School, writes her sentiments on a memory wall on April 21, 1999.
Rita Reed, Star Tribune Via Getty Images
Mourners fill the Mann Theater parking lot at a memorial service for victims of Columbine High School in Littleton, Colo., where two teenagers shot to death 12 students and a teacher before killing themselves.
Mourners fill the Mann Theater parking lot at a memorial service for victims of Columbine High School in Littleton, Colo., where two teenagers shot to death 12 students and a teacher before killing themselves.
Susan Watts, NY Daily News Archive Via Getty Images
Two Columbine High School students who escaped from the facility watch for friends as they were being evacuated on April 20, 1999, in Littleton, Colo., after two masked teens on a "suicide mission" stormed the school and killed fellow students with guns and explosives before turning the weapons on themselves.
Two Columbine High School students who escaped from the facility watch for friends as they were being evacuated on April 20, 1999, in Littleton, Colo., after two masked teens on a "suicide mission" stormed the school and killed fellow students with guns and explosives before turning the weapons on themselves.
MARK LEFFINGWELL, AFP Via Getty Images
Police officers gather in front of Columbine High School, in Littleton, Colo., before searching the building to insure that it was secure on April 20, 1999, following a shooting spree by two teenagers.
Police officers gather in front of Columbine High School, in Littleton, Colo., before searching the building to insure that it was secure on April 20, 1999, following a shooting spree by two teenagers.
MARK LEFFINGWELL, BOULDER DAILY CAMERA/AFP Via Getty Images
A girl makes the peace sign as she holds up a placard during a memorial service for those who died at the Columbine High School shooting in Littleton, Colo., on April 25, 1999. Close to 100,000 people attended the memorial in remembrance of the twelve students and one teacher who were killed in a shooting by two students on April 20, 1999.
A girl makes the peace sign as she holds up a placard during a memorial service for those who died at the Columbine High School shooting in Littleton, Colo., on April 25, 1999. Close to 100,000 people attended the memorial in remembrance of the twelve students and one teacher who were killed in a shooting by two students on April 20, 1999.
HECTOR MATA, AFP Via Getty Images
A group of students from Columbine High School hug as they pray near the coffin carrying the body of teacher David Sanders during his funeral on April 26, 1999. Sanders and twelve students died during an assault on the school by two gunmen who also killed themselves on April 20, 1999.
A group of students from Columbine High School hug as they pray near the coffin carrying the body of teacher David Sanders during his funeral on April 26, 1999. Sanders and twelve students died during an assault on the school by two gunmen who also killed themselves on April 20, 1999.
RICK WILKING, POOL/AFP Via Getty Images
Bob Crazy Bear of Thornton, Colo., says a prayer on April 21, 1999, with a lit herbal plant. Area residents and students left a carpet of flowers and balloons in honor of the 12 students and one teacher killed at Columbine High School on April 20, 1999, when two students opened fire on their classmates.
Bob Crazy Bear of Thornton, Colo., says a prayer on April 21, 1999, with a lit herbal plant. Area residents and students left a carpet of flowers and balloons in honor of the 12 students and one teacher killed at Columbine High School on April 20, 1999, when two students opened fire on their classmates.
MARK LEFFINGWELL, AFP Via Getty Images
Surrounded by police officers, an unidentified Columbine High School student (2nd L) in Littleton, Colo., makes a phone call following a shooting spree at the school by two masked teens on April 20, 1999. The gunmen stormed the school and blasted fellow students with guns and explosives before turning their weapons on themselves in the rampage.
Surrounded by police officers, an unidentified Columbine High School student (2nd L) in Littleton, Colo., makes a phone call following a shooting spree at the school by two masked teens on April 20, 1999. The gunmen stormed the school and blasted fellow students with guns and explosives before turning their weapons on themselves in the rampage.
MARK LEFFINGWELL, BOULDER DAILY CAMERA/AFP Via Getty Images
Police officers wearing body armor and armed with assault rifles cross in front of Columbine High School, in Littleton, Colo., after searching the building to insure that it was secure on April 20, 1999, following a shooting spree by two masked teenagers.
Police officers wearing body armor and armed with assault rifles cross in front of Columbine High School, in Littleton, Colo., after searching the building to insure that it was secure on April 20, 1999, following a shooting spree by two masked teenagers.
MARK LEFFINGWELL, BOULDER DAILY CAMERA/AFP Via Getty Images
Heather Rosson from Littleton, Colo., hugs her son Daniel as they pay their respects on April 21, 1999, to those who died in the Columbine High School shooting on April 20, 1999. Two heavily armed Columbine students killed twelve fellow students and a teacher and wounded at least twenty others in the attack. The two suspects then took their own lives.
Heather Rosson from Littleton, Colo., hugs her son Daniel as they pay their respects on April 21, 1999, to those who died in the Columbine High School shooting on April 20, 1999. Two heavily armed Columbine students killed twelve fellow students and a teacher and wounded at least twenty others in the attack. The two suspects then took their own lives.
HECTOR MATA, AFP Via Getty Images
Sara Buys lays flowers near Columbine High School in Littleton, Colo., on April 21, 1999. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage suspects, were killed in the rampage of gunshots and explosions at the school in suburban Denver.
Sara Buys lays flowers near Columbine High School in Littleton, Colo., on April 21, 1999. Authorities confirmed on April 21, 1999, that 15 people, including the two teenage suspects, were killed in the rampage of gunshots and explosions at the school in suburban Denver.
HECTOR MATA, AFP Via Getty Images
An unidentified woman hugs a student as they and others grieve after the Columbine High School massacre, in Littleton, Colo., on April 21, 1999.
An unidentified woman hugs a student as they and others grieve after the Columbine High School massacre, in Littleton, Colo., on April 21, 1999.
Pamela Salazar, Liaison Agency Via Getty Images
A man holds his hands to his head during a memorial service held at the Foothills Bible Church for high school shooting victim John Robert Tomlin on April 23, 1999, in Littleton, Colo. Tomlin was a victim in the high school shooting at Columbine High School where 12 students and one teacher were killed on April 20, 1999, by two students, who also killed themselves in what police are called a "suicide mission.鈥
A man holds his hands to his head during a memorial service held at the Foothills Bible Church for high school shooting victim John Robert Tomlin on April 23, 1999, in Littleton, Colo. Tomlin was a victim in the high school shooting at Columbine High School where 12 students and one teacher were killed on April 20, 1999, by two students, who also killed themselves in what police are called a "suicide mission.鈥
HECTOR MATA, AFP Via Getty Images
Tom Mauser (R) speaks at a protest on April 30, 1999 outside the 91影视 State Capitol with a poster of his son Daniel, who was killed days prior on April 20 in the shooting rampage at Columbine High School in Littleton, Colo. The National Rifle Association also held a scaled-down annual meeting in Denver on the day of the protest.
Tom Mauser (R) speaks at a protest on April 30, 1999 outside the 91影视 State Capitol with a poster of his son Daniel, who was killed days prior on April 20 in the shooting rampage at Columbine High School in Littleton, Colo. The National Rifle Association also held a scaled-down annual meeting in Denver on the day of the protest.
Allan Tannenbaum, Getty Images
Mourners gather during a candlelight vigil at Civic Center Park in Denver, Colo., on April 21, 1999. The vigil was held in honor of the 12 students and one teacher killed at Columbine High School in Littleton, Colo., on April 20, 1999, when two students opened fire on their classmates during what police called a suicide mission.
Mourners gather during a candlelight vigil at Civic Center Park in Denver, Colo., on April 21, 1999. The vigil was held in honor of the 12 students and one teacher killed at Columbine High School in Littleton, Colo., on April 20, 1999, when two students opened fire on their classmates during what police called a suicide mission.
JEFF HAYNES, AFP Via Getty Images
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