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Teen Who Threatened to Shoot Up School Was Obsessed With Columbine: Cops

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The chilling PSA was released by Sandy Hook Promise, a gun safety advocacy group formed in the wake of the Sandy Hook school massacre in 2012.

Back-to-School PSA Spotlights Ordinary Items That Might Save Kids' Lives in a Shooting

Designers Brick Owens and Duey Catorze said the designs are meant to make a bold statement.

'Sandy Hook' and 'Columbine' Sweatshirts With Bullet Holes Cause Controversy During NYFW

Alexis Wilson, 18, allegedly showed a co-worker at a local pizzeria videos of herself shooting a newly purchased rifle and spoke about her idea to open fire at McAlester High School in Pittsburg County.

Teen Arrested for Alleged Threat to Shoot '400 People' at School 'for Fun:' Report

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Teen With Same Name as Alleged Parkland Shooter Nikolas Cruz Wants to Change It

They claimed the real issue is not gun control but mental health and held their own vigil outside using the lights from their cellphones.

Students Storm Out of Vigil for Colorado School Shooting Victims

Frank DeAngelis said he draws strength from reciting the names of the 12 students and one teacher killed 20 years ago.

Former Columbine Principal Recites Shooting Victims' Names Every Morning

A classmate told Inside Edition that she kept to herself and was quiet. Another classmate said she was "by herself a lot."

Columbine-Obsessed Teen Compared Herself to Pot of Boiling Water

The bombs were made in the homes of the shooters parents by the killers themselves.

Debunking the Myths Around Columbine High School Shooting

Jeremy Richman, whose daughter was killed in the 2012 Sandy Hook shooting, was found dead of an apparent suicide.

Father Whose Daughter Was Killed in Sandy Hook Shooting Found Dead of Apparent Suicide

Sydney Aiello died by suicide on March 17, according to her mother.

Struggling With PTSD, Parkland School Shooting Survivor Takes Her Own Life

The training is called "Alice": Alert, Lockdown, Inform, Counter, Evacuate.

Indiana Teachers Say They Were Hit With Airsoft Gun Pellets in School Shooter Drill

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Teen Who Threatened to Shoot Up School Was Obsessed With Columbine: Cops

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Video Shows Armed Deputy Waiting Outside School During Parkland Shooting: Cops

Students Arrange Backpacks in the Shape of a Heart During Walkouts

Brother of Florida Shooting Suspect Nikolas Cruz Cries During Court Hearing

16-Year-Old Parkland Shooting Survivor Visits White House

What Life Is Like Behind Bars for Parkland Shooting Suspect Nikolas Cruz

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Comfort Dogs Help Students at Parkland School Heal as Students Return

Uber Driver Recalls Taking Suspected Florida Gunman to School Before Massacre

Medal of Honor Recipient Gives Teen Daughter Shooting Survival Training