Twitter locked the account of the National File, a national populist news website, for reporting on a tweet from Tami Burages, a woman who says her 13-year old nephew died three days after receiving a second dose of Pfizer’s coronavirus vaccine. Twitter later said the account had been locked in error and reinstated it. According to a Twitter spokesman, the platform took enforcement action on the National File’s account in error. That action has been reversed and the account has been reinstated. The National File’s report was about Twitter user Tami Burages, who said her teenage nephew had died shortly...