Online extremists are forced to balance public outreach and operational security in choosing which digital tools to utilize.
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Experts have focused on the possibility that the Trump administration will designate the group as a Foreign Terrorist Organization. But there are other tools the Trump administration could use.
The attacks suggest both the danger posed by foreign fighters and the importance of government efforts in stopping them.
Efforts to expand the mission of the National Counterterrorism Center should begin with a review of how the Department of Homeland Security has addressed domestic terrorism since its inception in 2003.
In January and February, several defendants were charged, were sentenced, or pleaded in cases involving international terrorism charges.
Governments must reorient their counterterrorism approaches to reflect an environment in which all terrorist threats have transnational dimensions.
Three recommendations for adapting to the threat posed by far-right violent extremism.
The terrorist attacks on the Al Noor and Linwood mosques in New Zealand, which so far have killed 49 people and led to dozens more injuries, are only the latest in anti-Muslim right-wing violence that is plaguing many democracies around the world.
On Feb. 25, a three-judge panel of the U.S. Court of Appeals for the Second Circuit heard oral argument in Force v. Facebook, a case about whether Facebook can be held liable for the use of its platform to coordinate and encourage violent attacks by users linked to Hamas.
Domestic extremist violence is on the rise. To address the problem, Congress should hold hearings and make domestic terrorism a federal crime.