Social media has contributed to some of the largest political events of the last couple of years. It aided the Arab Spring, has been a constant thorn in the side of the Chinese authorities, has given Vladimir Putin and Mahmoud Ahmadinejad slight cause for concern, and it helped to organise the less-constructive London riots. The latest social media innovation is KONY 2012 by the advocacy group “Invisible Children.” The campaign, which went viral this week, is aimed at stopping Joseph Kony, the Ugandan-born leader of the Lord’s Resistance Army. The immediate relevance of this campaign has nothing to do with the issue itself, but with the response that it has received. My own knee-jerk reaction when I noticed that a …