UPDATED: Compiling Cases where concealed handgun permit holders have stopped mass public shootings and other mass attacks

25 May , 2020  

This is a revised, updated version of a post originally written on April 21, 2015.

Columnist Eugene Volokh wrote in the Washington Post on April 20, 2015: “Have civilians with permitted concealed handguns stopped such mass shootings before?”  We provided Volokh with a list of such cases, which he used.

Below, we have collected news stories on more cases of permit holders stopping mass public shootings with their handguns (we separately collect cases where concealed handguns are used to stop other crimes).…

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Original Research

Analysis of murder data in Baltimore: 82% of Victims have criminal record, 81% of suspects have criminal record, average victim had 10.8 arrests

6 Apr , 2020  

Clearly neither the victims nor perpetrators of murders are “normal” people — both groups are overwhelmingly criminals. Sixty-five percent of murders occurred for unknown reasons, and there were only 86 suspects for these 348 murders. Fifty-nine percent of murders occurred on the street.

Homicides in Baltimore largely involve criminals killing criminals.…

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New Research Published at Econ Journal Watch: How the U.S. Compares to Other Countries in the Rate of Public Mass Shooters

3 Apr , 2020  

Dr. John R. Lott, Jr. and our research director, Professor Carlisle E. Moody, have published a new research paper at Econ Journal Watch.


Adam Lankford (2016) claims that the United States accounted for 31 percent of the world’s public mass shooters over the 47 years from 1966 to 2012. After four years of extensive worldwide media coverage, Lankford—in response to our paper (Lott and Moody 2019)—finally made one of his datasets available.


UPDATED: 20.5 State Capitols Officially Allow (and at least 24 allow in practice) Some Form of Legal Firearm Carry

16 Jan , 2020  

CPRC has found that there are at least 21 State Capitols in the U.S. which officially allow some form of legal firearm carry for either visitors, legislators, employees, or all of the above.  Tennessee is the most recent state to allow carrying permitted concealed handguns into legislative buildings.  Some states require the individual have a handgun carry permit before being allowed to enter the Capitol with a firearm.…



New Research: Survey on the views on gun control by academic criminologists, economists, and public health researchers

14 Dec , 2019  

Harvard’s Arthur Berg, Simon Fraser University’s Gary Mauser, and the CPRC’s John Lott surveyed academics who have published peer-reviewed empirical research on gun control issues in the just published latest issue of Regulation. A pdf is available to be downloaded here. The first paragraph in the piece starts this way:

Academics from different fields vary widely in their views on the effectiveness of gun control.


New Research on Red Flag Laws: Do they save lives? Reduce homicides or suicides?

22 Nov , 2019  

Dr. John Lott and, our research director, Carlisle Moody have new research on the impact of Red Flag laws on homicides and suicides.


Seventeen states have passed Red Flag or Extreme Risk Protection Order (ERPO) laws which allow police, family members, individuals living in the same residence, and others to file a petition for a court order temporarily seizing the firearms of persons accused to be a danger to themselves or others.


With all the concern about assault weapons, how has the share of murders with rifles changed over time?

4 Nov , 2019  

With all the concern about assault weapons since the federal ban sunset in 2004, it is interesting to see what a small share of murders are committed with any type of rifle and how even that share has fallen over time. The percentage of firearm murders with rifles was 4.8% prior to the ban starting in September 1994, 4.9% from 1995 to 2004 when the ban was in effect, and just 3.6% after that (3.9% if you look at just the first ten years after the an ended).…



New Concealed Carry Report for 2019: 18.66 million permit holders despite 16 Constitutional Carry States, over 1.4 million more than last year

2 Oct , 2019  

A copy of our newest report is available here. Copies of our annual reports from 2014 through 2018 are available here.


The number of concealed handgun permits has increased for the third year in a row. The figure now stands at over 18.66 million– a 304% increase since 2007.  …



New Research: Do Researchers from Different Fields have a Consensus on Gun Control Laws and do Registered Voters Agree with any of them?

2 Sep , 2019  

Dr. John Lott joined with Professors Arthur Z Berg, MD and Gary A. Mauser in surveying criminologists, economists, and public health researchers on gun control. A copy of the new research is available here.


Hundreds of millions of dollars go to firearms research on crime, suicides, and accidental deaths, but the vast majority of the money, particularly government money, is being spent on public health research.


Breaking down Mass Public Shooting data from 1998 through June 2019: Info on weapons used; gun-free zones; racial, age, and gender demographics

7 Jul , 2019  

The Excel file with detailed information on mass public shootings is available here. With all the discussion about having another assault weapon ban, only 13% of mass public shootings are done solely with any type of rifle. Twenty-eight percent involve only a rifle or a rifle in combination with a handgun and/or a shotgun.…

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