Rutger Bregman became a social media sensation after his onstage tirade at the gathered elite in Davos this year. His call for higher taxes, open borders and a shorter working week captured the imaginations of millions who viewed the speech online. But can his utopian ideas be translated into realistic policy changes? Plus: J Oliver Conroy on David Buckel, a year on from the climate protester’s death in New York. Help support our independent journalism at theguardian.com/infocus