In December 2013 an American woman named Justine Sacco tweeted to her 170-odd followers that she was on her way to South Africa, and hoped she wouldn't get Aids. "Just kidding. I'm white!" she wrote. So You've Been Publicly Shamed by Jon Ronson, R275By the time her flight landed 11 hours later her comment had been retweeted so often that her name was trending at number one.In the following weeks she was made to endure the foulest abuse, with calls for her rape and death, and she lost her reputation and job.Jon Ronson's amusing and thought-provoking investigation into the subject shows how o ne thing leads to another, and how quick we are to misjudge or persecute.What Ronson discovers is disturbing for everyone involved - and with the global saturation of social media, more of us are connected to our mean streak. Twitter and Facebook have allowed more of us to give vent to our darker, angrier feelings."Fury at the terribleness of others had begun to consume us a lot," Ronson writes.He goes into a study of what shame really is, and what it does to us, from which many fascinating observations flow. But what can we do about shame, if we have it?To find out, Ronson visits a shame eradication workshop run by a man named Brad Blanton, and in these pieces he is at his most comic. ..