Mark Zuckerberg has revealed deep-seated concerns that the tide is turning against globalisation.In an interview with the BBC, the Facebook founder said that fake news, polarised views and "filter bubbles" were damaging "common understanding".He said people had been left behind by global growth, sparking demands to "withdraw" from the "connected world".In a call to action, he said people must not "sit around and be upset", but act to build "social infrastructures"."When I started Facebook, the mission of connecting the world was not controversial," he told me."It was as if it was a default assumption that people had; every year the...