Columbine shooting

Both survivors share their criticism of how, even years after shootings at their schools, no changes have been made to address mass gun violence in America.

Gunfight author Ryan Busse was once a rising star in the gun industry. But he became disillusioned after Columbine when, he says, the NRA began to use "fear and conspiracy and hatred" to boost sales.

Most students who committed deadly school attacks over the past decade were badly bullied, had a history of disciplinary trouble and their behavior…

Fears of inspiring copycats and a recent surge in "morbid fascination" visitors have prompted school officials to consider tearing down the building. The school's name and mascot would stay the same.

Over the past 20 years, mass shootings have resulted in communities of survivors. Heather Martin, who was a senior at Columbine High School in 1999, runs a nonprofit that connects them.

Sol Pais, the 18-year-old Miami Beach High student who traveled to Colorado, bought a shotgun and threatened violence against schools, has died of an…

Guy Grace, a school-security official whose Colorado community was rocked by the 1999 murders at Columbine High School, shared school-hardening solutions…

Some 2,600 school walkouts are planned across the country, starting at 10 a.m. in each time zone.

It’s been 19 years since the shooting at Columbine High School in Colorado, a little more than two months since the massacre at Marjory Stoneman Douglas…