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Diseased Illegal Immigrants Aren’t “Invading” the United States
My research at the Cato Institute on crime and terrorism committed by illegal immigrants conclusively shows that they commit less crime than native-born Americans and have murdered zero people in domestic attacks since 1975. We also fond no statistically significant relationship between the size of the immigrant population, the illegal immigrant population, or the legal immigrant population and the spread of serious communicable diseases.
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How Ruhr University is Combatting Right-Wing Extremist Activities
“The constitutional principles of freedom of opinion, which we seek to protect and defend, don’t allow people to be sanctioned because of their presumed beliefs. This also applies to neo-Nazis. However, we do not stand idly by”: Ruhr University Bochum’s vice rector.
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Madison and Nashville School Shooters Appear to Have Crossed Paths in Online Extremist Communities
A month after a student opened fire at Abundant Life Christian School, another killed a classmate at Antioch High School. Both were active in an internet subculture that glorifies mass shooters and encourages young people to commit attacks.
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Antioch, Tenn., Shooter Inspired by Broad Extremist Beliefs and Previous Mass Killers
On January 22, 2025, a 17-year-old student opened fire inside the cafeteria at Antioch High School in Nashville, Tennessee. The shooter subscribed to broad accelerationist beliefs, which hold that society is irrevocably broken and must be destroyed to be rebuilt.
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Bystander Reporting Helps Prevent Mass Violence
Bystander reporting’s role in mitigating mass violence deserves much more attention –because peers, bystanders, and “bystanders of bystanders” often know a lot about a person’s concerning behavior, and because they often choose not to report because they perceive authority figures are not receptive or are unlikely to be helpful.
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5 Israeli Innovations for Fighting Wildfires
As regions from California to the Mediterranean face wildfire threats, these innovations can help win the battle against out-of-control flames.
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Will Trump Spark a Mineral 'Gold Rush' in Greenland?
The mineral wealth on the Arctic island of Greenland is in the global spotlight after U.S. President Donald Trump said he wants to take control of the territory from Denmark, prompting alarm from European allies.
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Southport Attack: Changing the Definition of Terrorism Won’t Stop the Violence
Axel Rudakubana, who killed of three young girls in Southport in a stabbing attack in 2024, had been referred to the Prevent counter-terrorism program three times, but failed to meet the threshold for intervention. Some want to change terror laws to deal with lone, violent killers. But as a researcher of counter-terrorism laws, I argue there is little point to widening what is already a broad definition of terrorism.
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In Times of Crisis, States Have Few Tools to Fight Misinformation
While officials in Southern California fought fire and falsehoods, Meta —the parent company of Facebook and Instagram —announced it would eliminate its fact-checking program in the name of free expression. As social media companies are pushing back against efforts to crack down on falsehoods, questions are asked about what, if anything, state governments can do to stop the spread of harmful lies and rumors that proliferate on social media.
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House Democrat Pushes Bill Requiring Liability Policy to Buy or Possess Firearms
Under a bill proposed Monday, the legislative majority is pushing to require proof of “financial responsibility” before purchasing or possessing a firearm by requiring certain liability policies.
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Monitoring Space Traffic
AeroAstro Ph.D. student Sydney Dolan uses an interdisciplinary approach to develop collision-avoidance algorithms for satellites.
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Russia's Arctic Militarization Behind Trump's Focus on Greenland
The United States has long viewed Greenland as vitally important for its defense. With Russia investing heavily in its Arctic military footprint in recent years, the importance of Greenland to the United States is increasing.
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Proud Boys: A Big Tent for Hate
Some of those pardoned by President Trump are leaders and members of the Proud Boys, a right-wing extremist group with a history of using violence, targeted harassment, and intimidation to achieve their political goals and combat perceived enemies – Jews, Muslims, gays, progressives, and feminists.
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Acoustic Sensors Find Frequent Gunfire on School Walking Routes
A new study used acoustic sensors that detect the sound of gunfire to show how often children in one Chicago neighborhood are exposed to gunshots while walking to and from school. The study documents toll on kids in the community.
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The L.A. Fires Show a Need to Rethink Our Wildland Firefighting Systems
As bad as the fires in the Los Angeles area have been—more than 12,000 structures burned, about 180,000 people evacuated, more than 35,000 acres scorched, and at least 25 deaths—they could have been even worse, but in some ways Angelenos got lucky. Asystem built on luck, however, is not a durable system. It is already strained, and it risks breaking down in a world of greater and more frequent wildfires.
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More headlines
The long view
How DHS Laid the Groundwork for More Intelligence Abuse
I&A, the lead intelligence unit of the Department of Homeland Security (DHS) —long plagued by politicized targeting, permissive rules, and a toxic culture —has undergone a transformation over the last two years. Spencer Reynolds writes that this effort falls short. “Ultimately, Congress must rein in I&A,” he adds.
Southport Attacks: Why the U.K. Needs a Unified Approach to All Violent Attacks on the Public
The conviction of Axel Rudakubana for the murder of three young girls in Southport has prompted many questions about how the UK handles violence without a clear ideological motive. This case has also shown up the confusion in this area, and made clear the need for a basic reframing of how we understand murderous violence against the public today.
Strengthening School Violence Prevention
Violence by K-12 students is disturbingly common. Ensuring that schools have effective ways to identify and prevent such incidents is becoming increasingly important. Expanding intervention options and supporting K-12 school efforts in Behavioral Threat Assessment and Management (BTAM) would help.
Memory-Holing Jan. 6: What Happens When You Try to Make History Vanish?
The Trump administration’s decision to delete a DOJ database of cases against Capitol riot defendants places those who seek to preserve the historical record in direct opposition to their own government.
Evidence-Based Solutions to Protect Against Mass Attacks
Mass attacks like the New Year’s Day incident in New Orleans stir public emotion and have tragic consequences. While the investigations into this case will take time, we know from our work that there are things law enforcement and the public can do to mitigate and perhaps stop mass casualty events.
Trump’s Cuts to Federal Wildfire Crews Could Have “Scary” Consequences
President Donald Trump’s moves to slash the federal workforce have gutted the ranks of wildland firefighters and support personnel, fire professionals warn, leaving communities to face deadly consequences when big blazes arrive this summer. States, tribes and fire chiefs are preparing for a fire season with minimal federal support.