Commonalities in Mass Shooters
About The Violence Project
The Violence Project is a nonprofit, nonpartisan research center dedicated to reducing violence in society and using data and analysis to improve policy and practice.
As Seen On
Jillian Peterson, PhD and James Densley, PhD are sought-after national trainers and speakers on issues related to mental illness, trauma, and mass violence. Their expertise and insight is highly-regarded and featured regularly in numerous publications.
The Mass Shooter Database
169 mass shootings
172 mass shooters
Over 50 years of data
Nearly 200 variables
The largest, most comprehensive database on the life histories of mass shooters.
Speaking Engagements & Training
The first data-driven, mass shooting prevention national certification program. For schools, colleges, businesses, churches, and public spaces.
Testimonials
With Dr. Peterson and Dr. Densley’s innovative crisis response training program, we experienced a 23% decrease in crisis related service calls in our first year. Officers reported that the training was one of the best they have had, providing realistic tools they can use when helping those in crisis.
The nightmare scenario for a principal related to safety is a school shooter. Dr. Peterson and Dr. Densely’s research on mass shootings, and most importantly their framework for how we can think about prevention, provides school and system leaders with research that can be trusted and used in practical ways.
Teachers are on the "front lines" when it comes to recognizing students who are facing crisis. Teachers deserve a "real world tool box" to support a student who reaches out to them for help. Mass Shooting Prevention Training provides this "tool box." As a former educator and now, a survivor of a school shooting, I know how important it is for teachers to be able to "do something" when a student asks for help. Mass Shooting Prevention Training provides this help.
Our Blog
New research finds armed officers increases likelihood of mortality at school shootings
More people die in school shootings where an armed officer is present than when there isn’t, according to a new study published Tuesday that adds a surprising element… Read More »
Read MorePresence of Armed School Officials and Fatal and Nonfatal Gunshot Injuries During Mass School Shootings, United States, 1980-2019
After deadly school shootings at Columbine, Sandy Hook, and Parkland, many states mandated School Resource Officers or provided funding for districts to hire them. Lawmakers also considered arming… Read More »
Read MorePress Release – Study Finds Armed Officers Increase Mortality in School Mass Shootings
Saint Paul, Minn. — More people die in school mass shootings where an armed officer is present according to a study published by Minnesota researchers in the peer-reviewed… Read More »
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