The reasons for violent crime, or the factors that contribute to violent crime, or the methods used to combat violent crime are endlessly debated.
This article contains four parts:
- New multi-year data offered by Gallup from a demographic and economic perspective.
- An article containing survey data from the Police Executive Research Forum.
- A follow-up article adding additional reasons from a criminological perspective.
- The conclusion offers the top ten factors contributing to violent crime per ChatGPT.
Why This Article?
We've been studying the reasons for crime in the United States for decades. Criminologists cannot give you definitive empirical reasons for increases or decreases in crime.
Yes, there are endless opinions and correlations based on evidence, but there are few indisputable facts based on good data. There are few universally agreed-upon explanations for changes in crime rates.
This article gives you an array of probable explanations that most (not all) within the criminological and criminal justice communities agree with.
Is US Crime Up Or Down?
Crime statistics add to the confusion. Endless mayors, advocates, and government officials are claiming that their interventions reduced crime in 2025 and 2026, regardless of the lack of independent, well-researched, and replicated evidence.
The FBI states that violent and property crimes have decreased beginning in 2023 (3 percent) and 2024 (4.5 percent). The latest data from the FBI's website states that crime continues to fall.
But per the USDOJ's Bureau of Justice Statistics 50-year-old National Crime Victimization Survey (what the US Census and USDOJ call the premier method of counting crimes in America), we had a large increase in rates of violent crime in 2022 (44 percent), and rates have remained almost unchanged for 2023 and the latest-most recent full report for 2024.
The National Crime Victimization Survey states that urban violence increased in its latest 2024 report. Independent analysts say that violent and property crimes are falling considerably in cities based on crimes reported to law enforcement.
Thus, any analysis of factors that contribute to violent or property crime is confounded by our struggle to judge the effectiveness of interventions. If we can't agree on whether crime is up or down, how can we judge the effectiveness of programs?
You can make any case about crime you want based on USDOJ data. Different data sources allow for differing interpretations.
Crime Rises And Falls in Unison Throughout Western Industrialized Countries
We ask what causes crime in America when the better question could be what causes crime throughout the world. I wrote Do Crime Rates Rise and Fall Together Across Countries? which baffled some readers.
The premise is something I learned in criminology classes after leaving law enforcement; crime rates and totals seem to rise and fall collectively in Western Industrialized countries and beyond.
It's not universal or perfectly synchronized. But increases and decreases seem to follow a collective trend.
What would all these countries have in common? Demographics. There are correlates, such as the percentage of young people across all societies. Young people commit more crimes than older individuals. It's a basic tenet of criminology. If the global population shifts to older people, there will be less crime.
Another commonality would be events that affect income or the economy (e.g., a worldwide gasoline shortage, wars, or economic downturns). Lower incomes have always been associated with criminal activity. The proportion of younger people in society, plus economic distress, are probably the two most important variables cited by the criminological community for crime.
Another factor is that males commit the lion's share of crime in virtually all countries. What happens to males generally correlates with crime.
Society Controls Crime
A basic tenet of criminology is that society "controls" crime, not the justice system. If you believe that it's OK to hit your spouse or drive while intoxicated, buy stolen items, or use hard drugs or embrace violence as an acceptable solution to disputes, there will be more crime.
If society refuses to behave, then we have an unacceptable amount of violence and property crimes. A core idea in criminology is that society plays a larger role in controlling crime than the justice system alone. Media campaigns (which I participated in) successfully addressed community participation in anti-crime strategies, drunk driving, and hard drug use.
Gallup
All of this comes to mind when Gallup released a recent report celebrating the 250th anniversary of the United States and their overview of demographics, economics plus other variables.
In July, the United States will celebrate its 250th anniversary. The country's last major milestone was 50 years ago, at its bicentennial on July 4, 1976.
U.S. society has changed profoundly since then. Over the past five decades, the U.S. population has aged significantly, with the percentage of people 65 and older nearly doubling.
The country has also become more racially and ethnically diverse.
Americans are also less likely to be married than ever before.
Ahead of the nation's birthday, Pew Research Center identified some prominent trends across key areas of American life: demographics, work, family, and economics.
Their 50-year comparisons are based on U.S. Census Bureau data collected between 1970 and 2024.
An Aging Population
Since 1970, the share of Americans ages 65 and older has nearly doubled from 10% to 18%.
The older the population, the less crime societies experience.
The Rise Of The Sunbelt
In 1970, less than half of the U.S. population lived in the South (31%) and West (17%), while today, more than six-in-ten Americans live in these states.
Community stability is a hallmark of low-crime communities. The massive movement of people can inhibit social controls.
The Workforce
The share of the population working or looking for work has modestly increased since 1970. Labor force participation has increased among women but declined among men (my emphasis).
Considering that crime is mostly a male endeavor, the fact that labor force participation has declined among men is concerning.
Earnings Gaps Widen
The median inflation-adjusted annual earnings of workers have increased since 1970. But the gains are uneven, going mainly to workers with at least a bachelor's degree rather than those with less education.
Poverty And Economic Well-Being
How much the American standard of living has improved since 1970 depends partly on the measure used. As the economy has grown, the share of Americans in poverty has declined, and poverty among older Americans, especially, has fallen sharply.
At the same time, the middle class has shrunk, and a growing share of adults are in the lower class (my emphasis).
Criminology 101: Concentrated income inequity at the community level is strongly associated with higher crime rates.
Uneven Homeownership Gains
Homeownership has increased only modestly since 1970.
The lack of homeownership is a predictor of crime. Interestingly, areas with high home ownership but with a struggling economy generally have less stranger-to-stranger violent crime. Home ownership prompts a greater concern with the well-being and social control of the larger community.
Law Enforcement: The Reasons Contributing To Violent Crime
The Police Executive Research Forum brought together police chiefs from across the country and asked their opinions on developing crime issues. The list below reflects the perceptions of law enforcement leadership.
Top 10 Factors Identified as Contributing to Violent Crime
- Gangs 82%
- Juveniles/youth crime 80%
- Economy/poverty/unemployment 74%
- Impulsive violence/disrespect issues 74%
- Release of offenders from correctional institutions 69%
- Drugs-Cocaine 67%
- Poor parenting 63%
- Increased availability of guns 55%
- Reduced cooperation from witnesses/victims 37%
- Educational system: increasing dropout rates 36%
Top 10 Factors Contributing to Violent Crime-Updated
As a follow-up to the Top 10 Factors Contributing to Violent Crime using Police Executive Research Forum data, I added a list of often-cited top influences contributing to violent crime:
- Massive child abuse, violence, and neglect regarding those caught up in the criminal justice system.
- Poor decision-making skills on the part of offenders (probably driven by massive child abuse and neglect, described in other lists as "impulsive violence").
- Drug addiction (not including marijuana).
- Alcohol misuse (alcohol consumption has dropped considerably). Alcohol is strongly correlated with violent crime.
- Mental health issues (the criminal justice system is now a principal provider of mental health services). Note, however, that the vast majority of people with mental health or emotional problems do not engage in violent crime.
- What law enforcement does and does not do. Per USDOJ-funded literature reviews of over 1,000 studies, proactive policing may be the only fully documented method for reducing crime, according to the National Academy of Sciences. Research reviews have found that certain proactive policing strategies, such as hot spot policing, can reduce crime.
- Technology and target hardening. Enhanced DNA, computerized fingerprint analysis, real-time police control centers, cell phone tracking, home and business security devices, license plate readers, and facial recognition are improving the apprehension of criminals.
- Incarceration. In his book Why Crime Rates Fell, Tufts University sociologist John Conklin concluded that up to half of the improvement regarding reduced crime was due to a single factor: more people in prison (cover story, Time Magazine, What's Behind America's Falling Crime Rate). A ten-year study from the Bureau of Justice Statistics shows that 82% of those released from prison were arrested at least once during the 10 years following release. Offenders committed well over two million new crimes. About 61% of prisoners released in 2008 returned to prison within 10 years for a parole or probation violation or a new sentence. But many criminologists and the great majority of the progressive advocacy community strongly disagree with enhanced corrections reducing crime.
- Per Bureau of Justice Statistics data, we should focus on repeat offenders and criminal history. 77 percent of felony defendants have at least one prior arrest, and 69 percent have multiple prior arrests. Many have multiple incarcerations.
- Alternatives to incarceration/decriminalization/sentencing reform. We are entering a new day of defining who gets formally processed by the criminal justice system. But despite extensive USDOJ research, we still do not have a valid and unbiased threat assessment instrument, so choices as to who participates in alternatives remain guesswork and open to charges of race insensativity.
Conclusions: Violent Crime Factors From ChatGPT
There isn't a single agreed-upon "top ten" list—research in criminology shows violent crime emerges from a mix of individual, social, and environmental factors. That said, across decades of studies (including work by the National Institute of Justice and the Bureau of Justice Statistics), the same core drivers appear again and again.
Here are ten of the most consistently cited contributors:
1. Substance abuse (alcohol and drugs)
2. Poverty and economic stress
3. Prior exposure to violence (especially in childhood)
4. Weak family or social bonds
5. Peer influence and gangs
6. Availability of weapons
7. Mental health issues (especially untreated)
8. Lack of effective policing or justice system trust
9. Urban density and environmental conditions
10. Cultural norms that tolerate or glorify violence

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