
On Dec. 4, a man with an assault rifle entered a Washington, D.C., pizza shop, planning to “self-investigate” a conspiracy theory purporting that Hillary Clinton was at the center of a “pedophilia ring” being run out of the restaurant. The rumor—which has, needless to say, been emphatically debunked—can be traced to Twitter posts with the hashtag #pizzagate, which started trending on Twitter in early November and were subsequently tweeted and retweeted thousands of times over the next several weeks. The incident is one of many that have drawn attention to social media’s changing role in a tense political and social […]