Jon Ronson travels the world meeting recipients of famous public shamings, often while their shamings were in full force. These are people like us--people who, say, made a joke on social media that came out badly, or made a mistake at work. Once a transgression is revealed, collective outrage circles with the force of a hurricane, and the next thing they know, they're being torn apart, jeered at, demonized, sometimes even fired from their jobs. A...