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Surprise: Study Finds No Rise in Violent Crime Attributable to Adopting Right-to-Carry Laws

Thursday, December 6, 2018

Surprise: Study Finds No Rise in Violent Crime Attributable to Adopting Right-to-Carry Laws

As we’ve noted recently, much research purporting to demonstrate connections between access to guns or right-to-carry laws and increases in crime is seriously flawed.  Often it's an attempt to curtail or eliminate Americans’ rights under the Second Amendment rather than unbiased scientific research.

One recent study bucked that trend, however, finding no evidence of a link between access to firearms and increases in crime. “State Level Firearm Concealed-Carry Legislation and Rates of Homicide and Other Violent Crime,” (Hamill, Hernandez, Bailey, Zielinski, Matos, & Schiller, 2018), examined an expansive dataset, encompassing all 50 states and the District of Columbia – from 1986 to 2015 – to determine whether a relationship existed between liberalization of access to legal concealed carry of firearms and rates of both violent and nonviolent crime.

The 30 years’ worth of crime data comprised state-level crime rates for homicides, violent crime, rape, robbery, aggravated assault, and burglary from the Department of Justice Uniform Crime Reporting (UCR) system. The Centers for Disease Control and Prevention (CDC) provided partially redundant figures, including state-based rates of homicide overall and firearm-specific homicide. State-specific rates of unemployment were provided by the U.S. Department of Labor Bureau of Labor Statistics, and poverty rates were obtained from the U.S. Census Bureau.

Hamill et al. (2018) defined the ease with which state residents could obtain a carry permit in two ways:

  • On a four-point scale: (1) no carry; (2) may-issue; (3) shall-issue; or, (4) unrestricted (i.e., constitutional carry)
  • With a simpler, bipolar system which grouped the no-carry and may-issue schemes, versus the shall-issue and unrestricted arrangements

Using a form of linear regression modeling which allowed for multiple predictor and control variables as well as correlations among error terms (due to the time-based nature of the data), the authors estimated the various UCR and CDC crime statistics as a function of ease of obtaining carry permits, after controlling for state and year. No significant relationships were noted between ease of carry – whether measured on the four-point or bipolar scales – and rates of crime in any of the UCR or CDC categories. Repeating the analyses, but additionally controlling for level of poverty and unemployment, the Hamill team again found no statistical relationships between the ease with which carry permits could be obtained – regardless of measurement scheme – and crime rates in any category.

The authors concluded:

After adjusting for several population and demographic factors, we demonstrated that the rates of homicide and violent crime were not significantly increased after state laws were passed making access to concealed-carry permits less restricted. These important findings should inform further public policy research to help determine root causes and solutions to firearm-related homicide and violent crime in the future. (Hamill et al., 2018, p. 5)

As the authors noted, the study was correlational in nature and did not demonstrate causation (or lack thereof). Additionally, there were variables with potential explanatory power that were not included in the models, because the authors plan to do so “as a topic of future research” (Hamill et al., 2018, p. 7). Yet, however unlikely it may be that research such as this will convince many in the anti-gun crowd – whose minds seem closed to objective data which conflict with the “bad gun” narrative – it is refreshing to see objective minds investigate the association between guns and crime with the intent of letting the data write the story, rather than seeking evidence to buttress already-worn arguments.

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Third Circuit Strikes Some New Jersey Carry Restrictions in NRA Case

Thursday, September 11, 2025

Third Circuit Strikes Some New Jersey Carry Restrictions in NRA Case

Yesterday, the Third Circuit Court of Appeals issued an opinion in Siegel v. Platkin, striking some of the carry restrictions New Jersey enacted in response to the NRA’s landmark Supreme Court victory, New York State Rifle & ...

Gun Control “Journalist” Says the Quiet Part Out Loud

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Monday, September 8, 2025

Gun Control “Journalist” Says the Quiet Part Out Loud

Pure gun control. As in disarmament and banning of firearms. It’s rare that anti-gunners get straight to the exact point that we have been warning of for decades. 

Due Process: The Backbone of Legal Legitimacy

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Monday, September 8, 2025

Due Process: The Backbone of Legal Legitimacy

Close observers of the gun debate often see references to due process.

The Desperate Deflection to the “Red State Murder Problem”

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Monday, September 8, 2025

The Desperate Deflection to the “Red State Murder Problem”

California Governor Gavin Newsom (D) may have thought he had scored against President Donald Trump in a recent war of words over rampant crime and the deployment of federal law enforcement agents to Democratic-led cities

Illinois: Governor Signs Mandatory Firearm Storage Law

Wednesday, September 3, 2025

Illinois: Governor Signs Mandatory Firearm Storage Law

Earlier this month, Governor JB Pritzker signed Senate Bill 8 into law. This legislation imposes new mandatory firearm storage requirements on law-abiding gun owners.  

NRA Files Amicus Brief Urging SCOTUS to Hear Challenge to Washington’s Magazine Ban

Monday, September 8, 2025

NRA Files Amicus Brief Urging SCOTUS to Hear Challenge to Washington’s Magazine Ban

Today, the National Rifle Association filed an amicus brief urging the U.S. Supreme Court to grant certiorari in a case challenging Washington State’s ban on firearm magazines that hold more than 10 rounds.

Update: North Carolina House Reschedules Veto Override Vote

Tuesday, August 26, 2025

Update: North Carolina House Reschedules Veto Override Vote

Today, the House rescheduled the veto override vote on Senate Bill 50, Freedom to Carry NC, to Monday, September 22. 

Just One More Step: Australia’s New Weapon Laws

News  

Monday, March 24, 2025

Just One More Step: Australia’s New Weapon Laws

Australia implemented a firearm ban and mandatory confiscation in 1996 pursuant to the National Firearms Agreement, in which nearly 700,000 privately-owned firearms were turned in to the government and destroyed. 

Florida: Second Amendment Sales Tax Holiday Signed by Governor

Monday, July 7, 2025

Florida: Second Amendment Sales Tax Holiday Signed by Governor

Governor Ron DeSantis recently signed the Florida Budget for Fiscal Year 2025–2026, which includes a Second Amendment sales tax holiday from September 8 through December 31, 2025. The NRA is thankful for Governor DeSantis’ strong ...

Supreme Court Review Sought in NRA-Backed Challenge to California’s Magazine Ban

Friday, August 15, 2025

Supreme Court Review Sought in NRA-Backed Challenge to California’s Magazine Ban

Today, a Petition for Certiorari was filed asking the U.S. Supreme Court to hear Duncan v. Bonta, a case—backed by the National Rifle Association and California Rifle & Pistol Association—challenging California’s prohibition on magazines capable of holding ...

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NRA ILA

Established in 1975, the Institute for Legislative Action (ILA) is the "lobbying" arm of the National Rifle Association of America. ILA is responsible for preserving the right of all law-abiding individuals in the legislative, political, and legal arenas, to purchase, possess and use firearms for legitimate purposes as guaranteed by the Second Amendment to the U.S. Constitution.