Social media company X CEO Linda Yaccarino told employees that “data will tell the real story” about its efforts to battle antisemitism, according to a note to employees, amid growing outrage over the issue. X, formerly Twitter, lost several major advertisers including IBM and Comcast, and owner Elon Musk was blasted by the White House after he agreed with a post on the platform Wednesday. The post falsely claimed Jewish people were stoking hatred against white people. On Thursday, and media watchdog group Media Matters said it had found that ads for major brands had appeared next to posts that...