UPDATE: Data directly from the Federal Police shows a different set of numbers (Original Post below). The number of CAC licenses in Brazil increased from 867,472 in 2022 to 1,026,633 in 2026 (see screenshots below), but those are internal government numbers that links...
Crime Prevention
Research Center
Dedicated to conducting academic quality research on the relationship between laws regulating the ownership or use of guns, crime, and public safety
Latest Research
So is there really a question of whether Trump reduced crime in DC? Did the Washington Post inaccurately report murder data to make the drop look smaller than it actually is?
The Washington Post doesn't really want to give President Trump credit for the drop in crime in DC. Please look at the graph above and notice that there was a discrete change in August and September 2025 (and the change only started about half way through August on...
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Latest Columns
At The Federalist: No, Gun Control Wouldn’t Have Prevented The Latest Trump Assassination Attempt
Dr. John Lott has a new op-ed piece at The Federalist. . Summary: If policymakers and advocates are serious about reducing such incidents, the focus needs to shift toward measures that directly address the factors involved. . As is so typical, just hours after the...
At Real Clear Politics: Political Violence and the Willful Self-Deception of the Left
Dr. John Lott has a new op-ed at Real Clear Politics on the claims that the violence is coming from the right. It was also reprinted at Zero Hedge, Yahoo! News, The Ohio Press Network, Goodoil News, American Partisan, and Fairfield Times, Great Falls Leader, and Sun...
In the New Hampshire Union Leader: ‘Gun-free’ Campuses are a Peril
Dr. John Lott has a new op-ed in the Union Leader with New Hampshire state Representative Samuel Farrington (R), who is the primary sponsor of the Campus Carry bill that will be voted on this coming week in the state Senate Judiciary Committee. . News media coverage...
At the Washington Times: New Virginia gun law sets stage for ban
Dr. John Lott has a new piece at the Washington Times. . On Friday, Virginia Governor Spanberger signed legislation that bans the manufacture, sale, and possession of so-called “ghost guns”—homemade firearms without serial numbers. The law offers no...
At Real Clear Politics: Why Military Bases Should Never Have Been Gun-Free Zones
Dr. John Lott has a new op-ed at Real Clear Politics. It was also published at The Blaze and Zero Hedge. . It may sound hard to believe, but except for a very limited group of personnel, the military has treated its bases as gun-free zones. Until Thursday, only...
At the New York Post: The whole world laughs at Democrats’ lame voter-ID claims
Dr. John Lott has a new op-ed piece at the New York Post on the debate over the SAVE Act. There were at least 815 comments on the piece at the New York Post website and they published a letter on it in Sunday's paper. It was also picked up at Real Clear Politics, Hot...
Letter Submitted to the Australian Spectator: Responding to Claims about Benefits of UK’s Handgun Ban
The Australian Spectator ran an article on the claimed benefits of the UK's 1997 handgun ban. Dr. John Lott submitted this letter, but the magazine chose not to run it. The information used in this letter can be found here , but more detailed information is available...
At Real Clear Politics: The Terror Threat Americans Aren’t Supposed To Discuss
Dr. John Lott has a new op-ed at Real Clear Politics. Also published at World Net Daily. . Many commentators claim that Islam does not pose a threat of violence in the United States. Influencers such as Tucker Carlson often repeat this argument. Others,...
Videos
Talks
Talk at the Cooley Law School in Michigan on the Problems with Government Crime Data
Dr. John Lott gave a talk at the Cooley Law School in Lansing, Michigan about errors in the FBI crime data. The PowerPoint slides that correspond with the audio is available here. Talk at Cooley Law SchoolDownload
Talks in Houston at the the George R. Brown Convention Center on April 17th, 18th, and 19th: THE FBI CRIME DATA IS POLITICIZED AND A MESS and GUN CONTROL MYTHS
In the George R. Brown Convention Center, Dr. John Lott will be giving the following talks. Sessions GUN CONTROL MYTHS Friday, April 17 • 12:00 PM - 1:30 PM, Level 3, 371CF THE FBI CRIME DATA IS POLITICIZED AND A MESS Friday, April 17 • 2:30 PM - 4:00 PM , Level 3,...
Dinner Talk in Phoenix, Arizona on March 27th
Dr. John Lott will be giving a talk and book signing in Glendale, Arizona for a Gun Owners of America (you can sign up for tickets here). Others speakers include Rep. Andy Biggs (who is running for governor), Sheriff Mark Lamb (AZ Congressional Candidate for CD-5),...
Media Appearances
On Dallas’ Mark Davis Show: To Discuss Guns and Crime
Dr. John Lott appeared on The Mark Davis Show on 660 AM The Answer in Dallas, TX, to talk about the latest domestic violence–related mass shooting in Shreveport, Louisiana. They also discussed red flag laws and the issuance of commercial driver’s licenses to...
On the Larry Elder Show: The FBI and Media Don’t Tell You How Many Lives Guns SAVE
https://youtu.be/0Na8nFqZaM8 The Larry Elder Show shared a video of John Stossel quoting John Lott on “good guys with guns,” which Elon Musk posted, reaching millions of views. (Friday, April 17, 2026, from 12:44 to 12:55 AM PT)
On the Lars Larson Show: Why Military Bases Should Never Have Been Gun-Free Zones
Dr. John Lott talked to Lars Larson on his national radio show about his latest op-ed at Real Clear Politics on the end of gun-free zones at military bases. (Wednesday, April 8, 2026, from 5:35 to 5:43 PM ET)
All Our Posts
More Television Police Show Bias: Criminals & Terrorists Using Machine Guns, misleading claims about semi-automatic guns turned into machine guns
https://www.youtube.com/watch?v=9C8sEZ9COCY Television crime shows continue to portray frequent murders with machine guns. The Crime Prevention Research Center has repeatedly shown that these depictions are far from reality, yet many shows still suggest that criminals...
New Florida law allows armed volunteers at houses of worship
For decades we have written extensively on the dangers of gun-free zones. Gradually gun-free zones have been eliminated. . A new state law set to take effect July 1 will allow churches, synagogues, and other houses of worship to use armed volunteers for...
Defensive Gun Uses By People Legally Carrying Guns: 29 Cases During August 2025
Murfreesboro, Tennessee, August 1, 2025 (Rutherford Source) A customer shot and killed a suspected thief during an attempted ATM theft early Friday at a 7-Eleven Exxon on East Northfield Boulevard, Murfreesboro police detectives said. Detectives with the Criminal...


















