This article was originally published by The Conversation. After the Sept. 10, 2025, assassination of conservative political activist Charlie Kirk, President Donald Trump claimed that radical leftist ...

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, ...

Violent extremism conducive to terrorism poses a serious threat to peace and security and is an affront to humanity – affecting people of all ages, cultures, religions and nationalities. The United ...