As of March 19, ***** school shootings were recorded in the United States in 2025, impacting K-12 school grounds and college campuses nationwide. In comparison, there were ** school shooting incidents recorded in 2024. In addition to schools, gun-related violence occurs in many public places within the United States, including workplaces, churches, restaurants, and nightclubs. The source defines school shootings as incidents of gun violence which occurred on school property and at least one person was shot, not including the shooter. School property includes, but is not limited to, buildings, fields, parking lots, stadiums and buses. Accidental discharges of firearms are included, as long as at least one person is shot, but not if the sole shooter is law enforcement or school security.

As of July 14, 2025, there have been a total of 277 school shootings in California since 1966, the most out of any state. Texas had the second highest number of school shootings within this time period, with 237 shootings. The source defines a school shooting as every time a gun is brandished, fired, or a bullet hits school property for any reason, regardless of the number of victims (including zero), time, day or the week, or reason, including gang shootings, domestic violence, shootings at sports games and after hours school events, suicides, fights that escalate into shootings, and accidents.

This study provides an evidence-based understanding on etiological issues related to school shootings and rampage shootings. It created a national, open-source database that includes all publicly known shootings that resulted in at least one injury that occurred on K-12 school grounds between 1990 and 2016. The investigators sought to better understand the nature of the problem and clarify the types of shooting incidents occurring in schools, provide information on the characteristics of school shooters, and compare fatal shooting incidents to events where only injuries resulted to identify intervention points that could be exploited to reduce the harm caused by shootings. To accomplish these objectives, the investigators used quantitative multivariate and qualitative case studies research methods to document where and when school violence occurs, and highlight key incident and perpetrator level characteristics to help law enforcement and school administrators differentiate between the kinds of school shootings that exist, to further policy responses that are appropriate for individuals and communities.

According to a survey conducted in 2023, ** percent of Americans believed that hiring armed guards would be very effective in reducing the number of students killed in school shootings in the United States. A further ** percent believed that raising the age to purchase firearms to ** would be a very effective policy to reduce the number of fatalities from school shootings.

In this paper, we investigate the economic consequences of mass shootings. We find that shootings have negative effects on targeted counties' economies. Estimates using three different comparison groups yield similar results. Examining the mechanisms, we find that residents of targeted areas: (i) develop pessimistic views of financial and local business conditions; and (ii) are more likely to report poor mental health, which hinders usual activities such as work, suggesting that shootings lead to decreases in productivity. Further, we find that greater national media coverage of shootings exacerbates their local economic consequences.

Incidence and death rates of mass homicide by weapon type and sex.

100 of the mass shootings in the United States between 1982 and September 2024 involved weapons which were obtained legally; a clear majority. Only 16 incidents involved guns that were obtained illegally. Legally owned firearms in the U.S. Within the United States, one must be at least 18 years old in order to purchase shotguns, rifles, and ammunition, and at least 21 years old to purchase all other firearms. Some people may be restricted from owning firearms, such as individuals who have been dishonorably discharged from the military or tourists. Guns must be sold through licensed dealers, and purchasers must undergo a background check. However, the much-discussed “gun show loophole” allows people to purchase firearms from a flea market, gun show, online, or from a personal collector without a background check. The national firearm conversation The right to own a gun in the United States is protected by the 2nd Amendment of the Constitution. While changing a part of the Bill of Rights (the first 10 amendments to the Constitution) would be extremely difficult, the issue of gun rights has become a highly controversial, and highly partisan, topic in the national conversation. For example, a majority of Republicans believe that if legal gun ownership is controlled, that there will not be a difference in the number of mass shootings. In contrast, most Democrats believe the number will decrease.

As of September 4, there were two mass shootings in the United States in 2024. This is compared to one mass shooting in 1982, one in 2000, and 12 mass shootings in 2022 and 2023. School shootings The United States sees the most school shootings in the world. Some motivations for school shootings included depression, seeking revenge, and bullying. As a result of the large amount of school shootings, gun control has become a central topic in U.S. politics. This widespread problem happens across the United States; however California saw the highest number of K-12 school shootings in the United States since 1970. However, the deadliest school shooting (as of October 2023) was the Virginia Tech massacre in 2007. This tragedy left 33 dead and 23 injured. Mass shooting issues Mass shootings happen when there are several injuries or deaths from a firearm-related violence. Throughout the last century, mass shootings have become an epidemic in the United States. However, despite the increase in mass shootings and number of casualties, the U.S. government has done little to prevent future shootings from happening. As a result of the lack of cooperation in politics, mass shootings have become an important issue for Generation Z living in the United States. Furthermore, having the right to bear arms is a popular belief in the U.S. and the percentage of households in the United States owning at least one firearm has remained somewhat steady since 1972.

The statistic shows the number of victims of the worst mass shootings in western democratic countries from 1966 to 2012. On December 14, 2012, a gunman killed 26 people - 20 of them children aged 5 to 10 - in a shooting at an elementary school in Newtown, Connecticut. He committed suicide afterwards. Gun policy in the USA Over the last few years, mass shootings and accidents with children at shooting ranges have shaped national debates about the gun laws in the United States.

According to the Gallup survey across the United States in January 2014, 40 percent of the U.S. population stated they are totally satisfied with the existing gun laws in the United States, while 31 percent of the respondents stated they are dissatisfied, they want stricter laws.

The survey among American adults, which was conducted by the Pew Research Center in 2012 shortly after the Aurora movie theater shooting, on what they consider more important – the right to bear arms or controlling gun ownership, shows that 47 percent of the participants said the control of gun ownership is more important than the protection of the right to own guns.

The attitude towards gun control varies from generation to generation, 55 percent of the Millennials stated that controlling gun ownership is more important than protecting the gun rights, while 44 percent of the Silent generation stated the same.

The number of homicides by firearms has decreased over the last few years, 11,040 homicides by firearm were counted in 2003, while 9,960 homicides by firearm were counted in 2010. Homicide takes several forms, for example murder but homicide is not always a crime, it also includes affirmative defense, insanity, self-defense or the execution of convicted criminals.

America’s gun policy makes it possible for the American population to have a gun in their home on their own property, all U.S. states have imposed their own firearm restrictions. The percentage of Americans who have a gun in their home shifted from 40 percent in 1996 to 47 percent in 2011.

When and to what extent do crises and significant events induce changes in political attitudes? Theories of public opinion and policymaking predict that major events restructure public opinion and pry open new political opportunities. We examine the effect of major events on support for public policies in the context of the Sandy Hook Elementary School mass shooting in December 2012 using a nationally representative panel survey of U.S.\ adults. Across both cross-sectional and within-subject analyses, we find no evidence that Americans granted greater support for gun control after the Sandy Hook shooting. Our null findings persist across a range of political and demographic groups. We also find no evidence of attitude polarization as a result of Sandy Hook. Our results suggest that elite polarization in a particular issue area leads citizens to employ motivated reasoning when interpreting critical events, thereby reducing the capacity for attitude change. Our findings have important implications for identifying the conditions under which major events affect support for public policies and create political opportunities for policy change.

As of September 4, eight people were killed in mass shootings in the United States in 2024. A total 1,159 victims were fatally injured during mass shootings in the United States between 1982 and September 4, 2024.

As of September 2024, California had the most mass shootings in the United States, with 26 total shootings since 1982. The source defines a mass shooting as a shooting where three or more people were killed. Recently, a mass shooting occurred in the state of Maine on October 26, 2023, during which one of the highest number of fatalities from a mass shooting was recorded after Robert Card opened fire in a bowling alley and a bar, killing 18 and injuring 13 others. Firearms in the U.S. Mass shootings in the United States are disturbingly common. In comparison with other Western countries, there are significantly more shootings in the U.S., which some theorize is due to the relatively lax gun control laws. Gun control laws in the U.S. are dependent on the state, and the right to own a firearm is enshrined in the United States Constitution. Mass shootings The worst mass shooting in the U.S. was the Las Vegas Strip massacre in 2017, which resulted in 58 deaths and 546 injuries. 13 of the worst mass shootings in the United States have occurred since 2015 and the vast majority of these incidents in the U.S. have been carried out by shooters who are White and male.

Effect of mass shootings market returns by number of victims.

This special topic poll, fielded April 22, 2007, is a part of continuing series of monthly polls that solicit public opinion on various political and social issues. This poll focused on respondents' views on gun control and laws. Respondents were asked whether they favored stricter gun laws, whether they would support laws requiring a nationwide ban on semiautomatic handguns, a nationwide ban on the sale of assault weapons, a nationwide ban on people carrying a concealed weapon, and a law requiring a nationwide ban on the sale of handguns, except to law enforcement officers. Respondents were also asked whether they thought stricter gun control laws would reduce the amount of violent crime, whether the best way of reducing gun violence was either by passing stricter gun control laws or by stricter enforcement of existing laws, if the respondent or anyone in their home owned a gun, and whether they thought states should or should not be required to report mentally ill people to a federal database in order to prevent them from buying guns. Views were sought concerning the Virginia Tech shooting and university policies. Specifically, respondents were asked whether they thought school officials did or did not do enough to investigate concerns that the student who committed these shootings was mentally unstable, whether news organizations did the right thing or the wrong thing by airing photos and videos of the Virginia Tech gunman, whether they supported a law requiring universities to provide stricter screening and counseling for students who are suspected of being mentally unstable and possibly dangerous to themselves or others, and whether they supported changing confidentiality laws so that when a college student is suspected of being mentally disturbed, the school would be required to notify their parents. Views were also sought on the primary cause of gun violence in America and whether shootings like the one at Virginia Tech could happen in the respondent's community. Respondents were queried on whether they supported legislation giving Washington, D.C., a full voting member in the United States House of Representatives and whether they approved of the proposed law that would give Democratic D.C. a full voting member in the House, while also giving the Republican state of Utah another congressional seat. Demographic information includes sex, age, race, education, political party affiliation, and political philosophy.

Effect of mass shootings on market returns, sample split based on whether or not a child is a victim.

Handguns are the most common weapon type used in mass shootings in the United States, with a total of 167 different handguns being used in 117 incidents between 1982 and September 2024. These figures are calculated from a total of 151 reported cases over this period, meaning handguns are involved in about 78 percent of mass shootings. The involvement of semi-automatic rifles in mass shootings Owing to their use in several high-profile mass shootings, there has been much public discussion over the suitability or necessity of assault weapons for the purpose of self-defense. While any definition of assault weapon is contentious, semi-automatic rifles are generally the main focus of debates around this issue. Since 1982, there has been a known total 65 mass shootings involving rifles, mostly semi-automatics. This figure is underreported, however, as it excludes the multiple semi-automatic (and fully automatic) rifles used in the 2017 Las Vegas Strip massacre – the worst mass shooting in U.S. history, killing 58 and wounding 546. In fact, semi-automatic rifles were featured in four of the five deadliest mass shootings, being used in the Orlando nightclub massacre, Sandy Hook Elementary massacre and Texas First Baptist Church massacre. Mass shootings and gun control Despite evidence of strict gun control measures reducing the frequency and severity of mass shootings in countries like Australia, citizens in the United States remain deeply divided over the issue. According to a survey about the expected impact of gun laws on the number of mass shootings, a slim majority of Americans believe that gun control measures will have little-to-no effect. Most likely, this opinion is influenced by an underlying commitment among many in the U.S. to the greater importance of protecting gun ownership rights than limiting access to firearms. This sits in sharp contrast to many other developed countries. For example, most Canadians support a ban on civilian owned firearms.

Number and percentage of homicide victims, by type of firearm used to commit the homicide (total firearms; handgun; rifle or shotgun; fully automatic firearm; sawed-off rifle or shotgun; firearm-like weapons; other firearms, type unknown), Canada, 1974 to 2018.

Effect of mass shootings on market returns, sample split based on whether or not a handgun is involved.

This statistic shows the results of a survey among adult Americans on whether they think that new gun control laws will lead to less mass shootings. The survey was conducted in October 2017. During the survey, ** percent of respondents stated they think that new gun control laws could reduce the number of mass shootings a great deal.

Gunshot Detection Market Outlook

As of 2023, the global gunshot detection market size is estimated to be valued at approximately USD 1.25 billion, and it is projected to reach USD 3.45 billion by 2032, recording a robust CAGR of 12.1% during the forecast period. The increasing incidence of gun-related violence and the growing need for advanced security solutions are key factors propelling the growth of this market. Government initiatives and policies aimed at minimizing such incidents further contribute to the market expansion, creating a conducive environment for innovations in gunshot detection technologies.

One of the primary growth factors driving the gunshot detection market is the rise in gun-related incidents worldwide. With the escalating number of mass shootings and urban gun violence, there is an increasing demand for efficient and accurate gunshot detection systems. These systems help in the rapid response and intervention by law enforcement agencies, thereby minimizing casualties and damage. Additionally, advancements in gunshot detection technologies, such as the integration of IoT and AI, are enhancing the accuracy and reliability of these systems, further fueling market growth.

The technological advancements in detection systems are another significant growth factor. Modern gunshot detection systems incorporate sophisticated technologies like acoustic sensors, infrared sensors, and advanced analytics. These technologies enable the precise identification and location of gunshots, providing real-time data to law enforcement and security agencies. The continuous improvement in sensor accuracy and the development of portable and wearable detection systems are expected to drive further adoption across various sectors, including defense, commercial spaces, and public areas.

Government initiatives and regulations play a crucial role in the expansion of the gunshot detection market. Governments across various regions are increasingly investing in public safety and security infrastructure. Funding for smart city projects often includes the deployment of advanced surveillance and gunshot detection systems. Additionally, regulatory mandates requiring the implementation of such systems in public spaces and sensitive areas are contributing significantly to market growth. These initiatives aim to enhance public safety and reduce response times during shooting incidents, thereby fostering a safer environment.

From a regional perspective, North America holds a substantial share of the gunshot detection market, driven by high crime rates and significant government investments in security and surveillance systems. The region's well-established infrastructure and the presence of major market players further support market growth. Europe and Asia Pacific are also witnessing notable growth, with increasing adoption of gunshot detection systems in public and commercial spaces. In regions like the Middle East and Africa, the demand is primarily driven by the need for enhanced homeland security and defense mechanisms.

Product Type Analysis

The gunshot detection market is segmented into indoor and outdoor systems based on product type. Indoor gunshot detection systems are designed for use within buildings, such as schools, malls, and offices, where gun-related incidents can have catastrophic consequences. These systems are often integrated with existing security infrastructure, including CCTV cameras and alarm systems, to provide comprehensive coverage. The growing number of mass shooting incidents in educational institutions and public buildings is a significant factor driving the demand for indoor gunshot detection systems.

Outdoor gunshot detection systems, on the other hand, are used in open spaces such as streets, parks, and large public gatherings. These systems are typically more complex and robust, designed to withstand various environmental conditions while providing accurate detection and localization of gunshots. The increasing incidences of urban gun violence and public safety concerns are major factors contributing to the growth of outdoor gunshot detection systems. Technological advancements are also playing a crucial role in enhancing the effectiveness and reliability of these outdoor systems.

The market for outdoor systems is further driven by government initiatives and funding aimed at enhancing public safety. Various smart city projects and urban safety programs are increasingly incorporating outdoor gunshot detection systems to monitor and respond to gun-related incidents in real time. The integration of thes