Elon Musk made billions from electric vehicles and space travel, but when he bought Twitter last year its users were quick to predict its demise. Though reports of the social media site’s death appear to have been exaggerated, Musk’s takeover has seen thousands of company staff sacked and the reinstatement of users previously banned for breaking Twitter’s rules. Marianna Spring reports on the changes at the influential platform, speaking to insiders both in the UK and at Twitter headquarters in San Francisco, and investigates claims that Musk has created a culture in which hate and misogyny are allowed to thrive.