The 2020 election spurred social-media giants to adopt aggressive changes to how they police political discourse. Now the questions are whether that new approach will last and whether it should.
During the course of the contentious U.S. presidential campaign, and its messy denouement, Facebook Inc. and Twitter Inc. have taken steps that would have been unthinkable four years ago. They have applied fact-checking labels to posts from the U.S. president, deleted entire online communities and hobbled some functions of their own…