terrorism

Last week's arrest of the 56-year-old Republican for allegedly mailing pipe bombs to Trump critics makes you wonder.

Don't compare white nationalism to everyday partisanship.

Pipe bombs targeted at prominent critics of the president coupled with a horrific massacre of Jews might normally shake up an election.

Paul M. Rosenfeld is accused of an Election Day plot targeting the National Mall in the name of something called "sortition."

Are we heading toward a future in which all live entertainment requires layers of intense security?

We met with Aimen Dean, who spent a decade making bombs for the jihadi group.

The president told Congress he had data showing immigrants were more likely than native-born Americans to be terrorists. That wasn't true.

Northern Order, once described as a “phantom group,” is an Atomwaffen-affiliated neo-Nazi cell.

It's no accident that young white guys with a fondness for the darkest part of the internet are descending into far-right violence.

The recent arrest of Marcelo Valle Silveira Mello shows that incel culture isn’t easily stopped—and it doesn’t always go by the same name.

Several established conspiracy subcultures jumped at an opportunity to push media-discrediting agendas.

Minassian, 25, has been described as intensely socially awkward and has been connected to an incredibly misogynistic online group.