Mass Violence
Parkland: The Shooting That Created a Movement
Nikolas Cruz killed 17 at Marjory Stoneman Douglas on February 14, 2018 — 40 days after an FBI tip explicitly named him as a potential school shooter. The tip was never forwarded.
Mass Violence
Mass Violence
Sandy Hook: 20 Children and Nothing Changed
Adam Lanza killed 20 first-graders and 6 adults at Sandy Hook Elementary in December 2012. The Senate's background check bill failed four months later on a procedural vote.
Mass Violence
Virginia Tech: The Deadliest Campus Shooting in American History
On April 16, 2007, Seung-Hui Cho killed 32 people at Virginia Tech in two attacks two hours apart — exposing a fatal gap between mental health records and background check databases.
Mass Violence
Columbine: The Shooting That Changed Everything
On April 20, 1999, Eric Harris and Dylan Klebold killed 13 people at Columbine High School in 49 minutes — and opened a copycat pipeline that has never closed.