CEP Senior Advisor Dr. Hany Farid discusses the need for Facebook and other tech companies to do more to combat dangerous extremist content online. In a February 5 letter, CEP invited Facebook CEO Mark Zuckerberg to join top CEP advisors for a public conversation about the threat posed by extremist content that proliferates on Facebook. The invitation followed Zuckerberg’s public commitment to hosting a series of “public discussions about the future of technology in society.”