Students, reporters, and researchers already rely heavily on AI chatbot programs to write term papers, media reports, and research papers, and social media influencers frequently cite them as well. Thirteen AI chatbots are currently available for public use, as...
Dr. John Lott and CPRC senior fellow Kesten Green, who is also a researcher at the Adelaide University, College of Business and Law, compared the violent crime rates in Australia and the United States. Australian are clearly at much greater risk of violent crime than...
We have updated our earlier research to examine the FBI's active shooting data over the eleven years from 2014 to 2024. The new research is available here. . The FBI tracks active shooting cases—where individuals attempt to kill people in public places, excluding...
The behavior of major retailers, who own large swaths of private property open to the public, aligns with these preferences. Some of the country’s biggest chains—including Walmart, Costco, Kroger, Walgreens, CVS, and Target—generally prohibit their customers from...
Wall Street Journal reporter Mark Maremont continues his attacks on people carrying concealed handguns (this titled "The Innocent Bystanders Caught in Deadly Crossfire of Self-Defense Shootings"). Previously we tried writing letters to the WSJ pointing out legal...
A copy of our newest report is available here (please download). Copies of our annual reports from 2014 through 2024 are available here. . After peaking in 2022, the number of Concealed Carry Permit holders across the United States has declined for the third year in a...
At the end of this we have added Fact-checks from ChatGPT 5.1 and Grok Expert In April 2025, the New York State Department of Corrections and Community Supervision (DOCCS) held 32,469 incarcerated individuals. By November 2025, New York’s jails held another 18,334...
The Crime Prevention Research Center has worked with the Peace Officers Research Association of California and the California Association of Highway Patrolmen on an Amicus brief for the U.S. Supreme Court looking at the Ninth Circuit holding “that a national tradition...
The FBI's Criminal Justice Information Services (CJIS) shows a dramatic drop in arrest rates for homicides over the last 60 years -- a 43 percent, 39 percentage point, drop. The Excel file with the data is available here. fbi_murder_rate_1965_2004Download
Multiple Victim Public Shootings
Yale University Law School Working Paper, October 19, 2000.
Lott, John R., Jr., Yale University Law School
Landes, William M. University of Chicago Law School; National Bureau of Economic Research (NBER)
University of Chicago Law School, John M. Olin Law & Economics Working Paper No. 73, 1999.
Lott, John R., Jr., University of Chicago Law School
Landes, William M. University of Chicago Law School; National Bureau of Economic Research (NBER)
Safe Storage Gun Laws: Accidental Deaths, Suicides, and Crime
Yale Law School, Law & Economics Working Paper No. 237, 2000.
Lott, John R. University of Maryland Foundation, University of Maryland
Whitley, John E. University of Adelaide – School of Economics
National Instant Criminal Background Check System:
Fact vs. fiction on background checks and the gun control debate
Background checks have “no impact,” “zero” costs on law-abiding?
Tracking use of claim that 40% of gun sales take place without a background check
1968 Misdemeanor Conviction prevents U.S. Navy veteran from getting gun for self protection
One of the problems with background checks for gun purchases
More Problems with Brady Background Checks
The Problem with Brady Background Checks
What to make of the claim that 247 people on the terror watch list bought guns last year
Phantom gun control claims over the holes in the NICS background check system
NICS checks by state by month by year from 1998 to December 2010
Crime in Australia:
New Australian Study Shows More Guns, Less Crime
Gun smuggling in Australia, apparently the criminals are still obtaining guns
Some notes on claims about Australia’s crime rates
Gun permits almost double over last 5 years in New South Wales Australia
Australian gun regulations on murder
Crime in Ireland:
Some examples of the impact of gun bans on murder rates
Even more gun control in Ireland
So were Piers Morgan and Christiane Amanpour dishonest about crime rates last night?
Crime in Jamaica:
Some examples of the impact of gun bans on murder rates
So were Piers Morgan and Christiane Amanpour dishonest about crime rates last night?
Jamaica’s Bloody Lesson on Guns
Figure on Jamaica’s murder rate from the third edition of More Guns, Less Crime
Murder rates in Jamaica through the roof
Crime in Chicago:
Weren’t Chicago murder rates supposed to soar after the Supreme Court Decision?
“Gun Decision Was Product of University of Chicago”
Chicago has most murders of any city in the country
7th Circuit Appeals Court strikes down Chicago ban on gun ranges within the city limits
Chicago’s gang problem, role of cuts and changes in police policies
Alan Gura predicts that crime will drop if gun ownership allowed in Chicago
Chicago makes it even more costly to own a gun
Let’s Face It, Chicago’s Mayor Richard Daley Wants to Ban Guns, All Guns
Crime in Washington, D.C.:
Updating the changes in DC’s crime rates since Heller
Vet loses guns to DC police as he travels through nation’s capital
DC drags feet on correcting false info on DC’s gun laws
Ask Canada — gun registration won’t make D.C. safer
Crime down after Supreme Court overturns city gun bans
DC reluctantly moves to remove some gun control laws
DC’s phony crime closure rates
Where is the ACLU in Chicago and DC gun fee cases?
“Shot down: D.C. residents unable to register handguns”
Just a reminder about DC and Chicago’s crime rate changes after the Supreme Court decisions
NY Times points to Times Square BOMBER as reason for more government regulation of guns?
How difficult is it to get a handgun in DC? Very, very difficult.