Mark Zuckerberg faced his second day of questioning today in front of the House Energy and Commerce Committee, his reluctant appearance forced because of revelations first broadcast by this programme, and published in the Observer, that the privacy of 87 million Facebook users had been breached and may have been improperly used by Cambridge Analytica to help Donald Trump in the 2016 Presidential election. Ever since we broke this story, Mr Zuckerberg has refused to do an interview with this programme. He is answering questions from Congress though, telling lawmakers that the regulation of Facebook, that he had always resisted, is now “inevitable”.