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Highlights

Why mass shootings stopped in 2020 — and why they are now roaring back

March 23, 2021
Mass shootings, which had become far less frequent in 2020, have come roaring back. On Monday, a gunman opened fire...

Presence of Armed School Officials and Fatal and Nonfatal Gunshot Injuries During Mass School Shootings, United States, 1980-2019

February 16, 2021
After deadly school shootings at Columbine, Sandy Hook, and Parkland, many states mandated School Resource Officers or provided funding for...

Changing School Violence Prevention Approaches

March 16, 2020
While the names of victims and perpetrators are spread by the media, survivors of school shootings tend to be overlooked....

Five Gun Reforms Could Prevent Most Mass Shootings

February 27, 2020
After the terrible mass shooting in Milwaukee yesterday, the Los Angeles Times used our data to examine precisely how many mass...

Voice of America

February 14, 2020
When we first started building our database of mass shooters, we contemplated simply housing all the data exclusively on our...

Why do people attack places of worship? Here’s what we know from our mass shootings database

December 30, 2019
This year has been the worst on record for mass shootings, including many at places of worship. Read our analysis...

There is no single profile of a mass shooter. Our data show there are five types.

November 14, 2019
To really understand the profiles of mass shooters, you have to look at where the crime took place. Attacks in...

We analyzed 53 years of mass shooting data. Attacks aren’t just increasing, they’re getting deadlier

September 1, 2019
If you look at mass shootings over time, two things are alarmingly clear: The attacks are becoming far more frequent...

Watch: Common traits like childhood trauma, behavioral changes link mass shooters

August 6, 2019
The Violence Project has studied every U.S. mass shooting since 1966. Its database, which is not publicly available yet, includes...

What pushes people to carry out mass shootings, and what can be done to stop them?

August 5, 2019
The Violence Project's James Densley joined Don Lemon on CNN Tonight to discuss the recent mass shootings. He also discussed...

We have studied every mass shooting since 1966. Here’s what we’ve learned about the shooters.

August 4, 2019
The key to preventing mass shootings lies in understanding what the perpetrators have in common: (1) early childhood trauma and...

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Disclaimer: This project was supported by Award No. 2018-75-CX-0023, awarded by the National Institute of Justice, Office of Justice Programs, U.S. Department of Justice. The opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect those of the Department of Justice.

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