“Congress has a duty to oversee the online platforms that radicals have used to advance political violence,” committee chair James Comer said in announcing the October hearing. The Institute for Strategic Dialogue, perhaps the world’s leading think tank on fighting online extremism, recently released a report Young Guns: Understanding a New Generation of Extremist Radicalisation. The Five Eyes intelligence community published a joint report in December 2024 warning that youth radicalisation via online platforms was growing at an alarming pace. ASIO chief Mike Burgess has repeatedly said “extreme right-wing groups” are using online platforms to recruit teenagers. That livestreamed mass killing led to the Christchurch Call, a collaboration between governments and the tech industry designed to remove extremist content in a co-ordinated fashion.