"Mixed messages have led to recurring friction between Facebook and outside researchers who still find considerable violent or hateful content on the site. Hany Farid, who studies digital forensics at UC-Berkeley and works with the nonprofit Counter Extremism Project, fears that the company avoids more-aggressive policing to coddle right-wing users and protect its business model. 'You can’t have a network the size of Facebook because you’ve managed to figure out how to harness big data and do lots of complicated things, and say that this is a hard problem,' Farid said."