The power of the Twittermob has officially crossed the line from ‘worrying’ to ‘terrifying’. Yesterday, these ready offence-takers, these always primed chest-beaters over words and images that don’t gel with the moral outlook of the Twitterati, managed to get a newspaper article expunged from the internet, shoved down the memory hole, made into an un-article so that it would never again offend their sensibilities. And they destroyed the article with such swiftness that many people won’t even have noticed that it happened. But it did happen, and we need to talk about it.