Domestic Terrorism

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U.S. Secretary of State Marco Rubio speaks alongside US Secretary of the Interior Doug Burgum and US President Donald Trump during a cabinet meeting in the Cabinet Room of the White House in Washington, DC, on May 27, 2026. (Photo by Kent NISHIMURA / AFP via Getty Images)

The Pretext Behind the Trump Administration Labeling Cuba a State Sponsor of Terrorism

Cuba is not a state sponsor of terrorism. Its inclusion on the list reflects changing U.S. policy and the Trump administration's politicization of the "terrorist" designation.

How the Domestic Terrorist Label Endangers Rights and Drives Extremist Violence

Prepared congressional testimony for a Senate hearing that was postponed.
Backside of an officer, wearing a vest that reads: "POLICE COUNTERTERRORISM."

The U.S. Shouldn’t Lose Sight of the Real Terrorist Threats

As the Trump administration portrays far-left activists and drug cartels as major terrorist threats, the most dangerous foes are plotting.
Armed Secret Service agents stand on stage

To Counter Rising Political Violence, America Needs to Reinforce Its Early Warning Infrastructure

Stakeholders must reinforce U.S. monitoring and response infrastructure to address growing risks of political violence.
Mourners hold their candles in the air during a moment of silence during a vigil to mark one week since the mass shooting at the Route 91 Harvest country music festival, on the corner of Sahara Avenue and Las Vegas Boulevard at the north end of the Las Vegas Strip, on October 8, 2017 in Las Vegas, Nevada. (Photo by Drew Angerer/Getty Images)

No, There Isn’t a Trans Shooter Problem

Reactions to mass shootings often fixate on gender identity, ignoring extremist ideologies. This misplaced focus fuels scapegoating and deepens division.
Women embrace in front of memorial flowers on October 28, 2018 outside of the Tree of Life Synagogue after a shooting there left 11 people dead in the Squirrel Hill neighborhood of Pittsburgh on October 27, 2018. (BRENDAN SMIALOWSKI/AFP via Getty Images)

Global Crises, Local Impacts: How Mayors Need to Prepare

Global conflicts are fueling local polarization and extremism. Mayors must act early to protect their communities before violence erupts.
The logo of the Federal Bureau of Investigation (FBI) is seen at the Los Angeles Federal Building in May 2025. (Photo by PATRICK T. FALLON/AFP via Getty Images)

How the DOJ is Prosecuting Nihilistic Violent Extremism as Domestic Terrorism

The DOJ has charged an alleged nihilistic violent extremist with conspiracy to provide material support to terrorists for the first time.
The Just Security Podcast Cover Image

The Just Security Podcast: Examining the Trump Administration’s New Antifa Designations

Tom Joscelyn talks with former DOJ counsel Tom Brzozowski about new Antifa designations, their civil liberties impact, and changing limits on speech and association.
U.S. President Donald Trump (C) speaks as (L-R) White House Deputy Chief of Staff Stephen Miller, White House Chief of Staff Susie Wiles, U.S. Attorney General Pam Bondi, U.S. Secretary of Homeland Security Kristi Noem and Federal Bureau of Investigation Director Kash Patel listen during a roundtable discussion in the State Dining Room of the White House on October 08, 2025 in Washington, DC. Trump’s administration held the roundtable to discuss the anti-fascist Antifa movement after signing an executive order designating it as a “domestic terrorist organization”. (Photo by Anna Moneymaker/Getty Images)

How Designating Antifa as a Foreign Terrorist Organization Could Threaten Civil Liberties

If the Trump administration designates Antifa as an FTO, it could have implications extending beyond anti-fascist activists to the entire architecture of U.S. civil society.
A police officer responds to a shooting at Evergreen High School on September 10, 2025 in Evergreen, Colorado. At least three students, including the suspected shooter, were injured in the attack. (Photo by Michael Ciaglo/Getty Images)

Correctly Assessing Left-Wing Terrorism and Political Violence in the United States

A recent published report risks feeding false narratives about political violence and polarization.
Police maintain a presence outside a command center holding evacuated students following the lockdown of the school after a call of an active shooter on March 29, 2023 in Pittsburgh, Pennsylvania. Many schools, including Oakland Catholic and Pittsburgh Central Catholic, were targeted as part of what authorities are calling "computer-generated swatting calls." Many agencies, including state and municipal police, are conducting investigations. (Photo by Jeff Swensen/Getty Images)

Swatting Attacks and Nihilistic Violent Extremism: A Primer

Swatting attacks are sometimes dismissed as pranks or hoaxes. But they’ve wreaked havoc on college campuses this year and a network of extremists is behind many of them.

Assassinations in America: How Political Violence Became Personal

Americans can no longer turn to their political leadership to avert the catastrophe of political violence.
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