CNN’s Sara Sidner reports on the use of social media by far-right extremists as experts fear the attack on the US Capitol may just be the beginning.
CNN’s Sara Sidner reports on the use of social media by far-right extremists as experts fear the attack on the US Capitol may just be the beginning.
Computer scientist Alex Stamos and former DHS official Chris Krebs speak to CNN’s Brian Stelter about how extremist groups should..