For more than 15 years, Twitter has wrangled with what to do about controversial or hateful content and posters, arriving at a kind of detente in recent years that saw Republicans complaining about censorship and Democrats calling for the platform to do more to crack down on extremist speech. But in the few short weeks since he bought the platform, Musk has ripped up that status quo, eviscerated the company’s staff and ushered in a new era where no one knows what he’ll do next. Soon after buying the platform, the tech billionaire had said he would consult with outside...