Facebook CEO Mark Zuckerberg on Thursday defended the social media platform’s refusal to take down content it considers newsworthy “even if it goes against our standards.” But while he promoted free expression, limitations were place on coverage of his remarks at Georgetown University. Reporters were not allowed to ask questions only students were given that chance, filtered by a moderator. Facebook and Georgetown barred news organisations from filming. Instead organisers provided a livestream on Georgetown’s social media site and made available video shot by Facebook. “It’s quite ironic,” said Sally Hubbard, director of enforcement strategy at the Open Markets Institute and a former state prosecutor.