It’s rare for a news day to go by without some mention of extremism. But it’s also rare for the meaning of this word to be explained – so what does it mean?

Federal prosecutors have started describing some crimes as the work of "nihilistic violent extremists." One court filing described them as criminals who act "in furtherance of political, social, ...

The NVE threat signals the need for a paradigm shift among prevention practitioners and researchers, similar to the previous transition in focus from Salafi Jihadists to Racially Motivated Violent ...

The killing of far-right influencer Charlie Kirk last month by a 22-year-old suspect has brought into focus the epidemic of gun violence in the United States. While Kirk was a victim of political ...

A Russian court has declared Pussy Riot an extremist organization. What does this mean in practice? To begin with, it means that if you now write the word “Riot” next to the word “Pussy” in Russia, ...