top of page


Public·9 members


Persons who committed public mass shootings in the U.S. over the last half century were commonly troubled by personal trauma before their shooting incidents, nearly always in a state of crisis at the time, and, in most cases, engaged in leaking their plans before opening fire. Most were insiders of a targeted institution, such as an employee or student. Except for young school shooters who stole the guns from family members, most used legally obtained handguns in those shootings.



With support from the National Institute of Justice, The Violence Project database has drawn data exclusively from open sources such as social media sites and online newspapers. The aim is to build a broader understanding on the part of the public, the justice system, and the research community of who mass shooters are and what motivates their decision to discharge firearms at multiple people.

Suicidality was found to be a strong predictor of perpetration of mass shootings. Of all mass shooters in the The Violence Project database, 30% were suicidal prior to the shooting. An additional 39% were suicidal during the shooting. Those numbers were significantly higher for younger shooters, with K-12 students who engaged in mass shootings found to be suicidal in 92% of instances and college/university students who engaged in mass shooting suicidal 100% of the time.

Ozark Shooters Sports Complex is a large-scale facility, capable of hosting major events over 100 sporting clay shooters at a time. We are home to major Ozarks shooting tournaments and shooting events of all kinds, from advanced competitions to charitable fundraisers. We also offer firearm safety and carry concealed weapons (CCW) classes.

CISA offers a comprehensive set of courses, materials, and workshops to better prepare you to deal with an active shooter situation, focusing on behaviors that represent pre-incident indicators and characteristics of active shooters, potential attack methods, how to develop emergency action plans, and the actions that may be taken during an incident.

Ask about our custom logo programs for corporate, community, sport venues, weddings, restaurants/bar/casino (minimums apply). Our quality glass shooters make a wonderful souvenir for your guests. Oyster shooters also freeze well and can be thawed on demand for your events or customers. Contact our Wholesale department for custom shooters and discounts on wholesale, direct to chef and bulk orders.

  • The increase in gun violence in the United States has put pressure on law enforcement and others to find ways to reduce it. In 2022, there were 647 mass shootings, up from 383 in 2016. There has also been a three-fold increase in active shooter events between 2000 and 2016. These are defined as "one or more individuals actively engaged in killing or attempting to kill people in a populated area." googletag.cmd.push(function() googletag.display('div-gpt-ad-1449240174198-2'); ); A first-of-its-kind study examining records of gun purchases in California found that mass and active shooters have distinct patterns of buying guns compared to other legal purchasers. The UC Davis Violence Prevention Research Program (VPRP) research was published in the Journal of Criminal Justice."Efforts to develop tools to predict who will commit violence have fallen short of expectations," said Liz Tomsich, a research data analyst at VPRP and the first author of the study. "These new findings of pre-attack acquisition behaviors among mass and active shooters suggest purchasing histories that may deserve further scrutiny for preventing mass shootings."MethodsThe researchers used publicly available databases to identify active and mass shooters from California who committed attacks between 1985 and 2018.A crime analyst at the California Department of Justice cross-referenced media reports and criminal and transaction histories to compose workups for each mass and active shooter.Using the workups, researchers linked shooters who attacked between 1996 and 2018 to the California Department of Justice Dealer Record of Sale database. With this, they could identify shooters with a history of authorized transactions.The database has recorded information on all authorized handgun purchasers and transactions in the state since 1985, with detailed transaction data beginning in 1996.The more comprehensive data starting in 1996 allowed the researchers to compare mass and active shooters' histories of firearm acquisition with those of other authorized purchasers on a variety of factors.In addition, the study examined factors associated with firearms acquired closer to the date of attack among a set of individuals from California who committed a mass or active shooting between 1985 and 2018. These were analyzed whether or not they had a record of legal purchase.ResultsThe researchers identified several distinct patterns of gun purchases for buyers who went on to commit mass shootings. Compared to other legal gun purchasers, mass and active shooters who perpetrated an attack between 1996 and 2018 and had a history of authorized purchasing:purchased more handguns in the year before the attack

  • purchased their first gun at an older age

  • were more likely to have a history of purchase denials

  • Some buying patterns suggest pre-attack planning and a desire to have a firearm purchase record that was harder to trace. Analyses of individuals from California who perpetrated a mass or active shooting between 1985 and 2018 found that firearms acquired closer to the date of the attack were more likely to be:long guns

  • used during the attack

  • purchased out-of-state

  • acquired in an unauthorized manner, even among some mass and active shooters who were not prohibited from buying guns at the time of purchase

LimitationsThe researchers noted that the study had limitations. The sample size of 22 mass and active shooters in the case-control analysis was small, which limited their ability to look at multiple independent variables.The researchers were also limited by the information available in the databases. The more detailed Dealer Record of Sale transaction data began in 1996, excluding a case-control analysis of shooters who committed an attack before 1996.The team also could not examine long gun characteristics and acquisition patterns in the case-control analysis. The researchers did not always have detailed histories of unauthorized gun acquisitions."The findings inform our understanding of behaviors among mass and active shooters," said Hannah S. Laqueur, an assistant professor in the Department of Emergency Medicine and senior author of the study. "Future research could aid in the determination of whether the acquisition patterns characterizing mass and active shooters could be used in conjunction with other indicators of pre-attack planning to trigger a response from law enforcement and other intervention specialists." More information:Elizabeth A. Tomsich et al, Firearm acquisition patterns and characteristics of California mass and active shooters, Journal of Criminal Justice (2023). DOI: 10.1016/j.jcrimjus.2023.102047 Provided byUC Davis

Sensationalized headlines, photographs, and breaking personal information about the shooters, victims, and acts themselves provide the notoriety perpetrators of mass shootings crave and can spark others to carry out similar acts. Refraining from publishing any personal information about mass shooters may be one of the easiest, quickest, and most effective interventions for decreasing mass shootings, especially school and other public shootings, which comprise about 10% of all mass shootings.

The suspect accused of killing 10 people at a Colorado grocery store this week follows a deadly pattern among mass shooters: 98% of perpetrators are male. Helen H. Richardson/MediaNews Group/Denver Post via Getty Images hide caption

If men vastly outnumber women as mass shooters, those perpetrators are often a model for the next male shooters, who "see themselves in them," Peterson said, a phenomenon that she noted is particularly true among young, white men. Violence Project data show that white men are disproportionately responsible for mass shootings more than any other group.

"They study the perpetrators that came before them," she said. "Many school shooters study Columbine, for example; other university shooters study the Virginia Tech shooting. And they really are kind of using those previous shootings as a blueprint for their own."

In nearly all mass shootings over this period, the shooter was an adult man who acted alone.4Of the 240 mass shooting incidents, 212 incidents involved a lone shooter, compared to 28 with multiple shooters. In total there were 285 shooters, gender was identified for 266 shooters, and age was identified for 261 shooters. 249 of the 266 mass shooters with known gender were male; 249 out of 261 with known age were 18 and older. Thirty-two percent of mass shooters, or 92 shooters, ended with the perpetrator dying by suicide, and another 24 shooters were killed by responding law enforcement.5There is one additional incident where the shooter both shot themselves and was shot by responding law enforcement, and an autopsy was unable to determine which was the cause of death. This shooter has been excluded from this count. The remaining 145 mass shooters were taken into custody by law enforcement, while the outcomes and identities of 23 remain unknown.

In the aftermath of the recent trio of gun massacres in the United States, social workers, psychologists and researchers in La Crosse and nationwide are calling attention to the effects of adverse childhood experiences, trauma in their formative years appearing to be a commonality among many mass shooters.

For their research, Peterson and Densley interviewed perpetrators, family members, shooting survivors and first responders, as well as scouring manifestos, media coverage, suicide notes, medical history and trial transcripts. Their findings showed four similarities among shooters, as stated in the op-ed: 041b061a72


Welcome to the group! You can connect with other members, ge...
Group Page: Groups_SingleGroup
bottom of page