A close friend of mine received some unwelcome post recently: a letter from the local police force with an accusation of insulting behaviour. It referred to a comment she had posted on a certain social media web site – well-known for its own lack of legal responsibility, partisanship and the politics of its owner – where she drew, in no uncertain terms, the original poster’s attention to a piece of misinformation from a German politician, well known for a wealth of false claims over the years, and described the further distribution of such fact-free propaganda as more than just foolish. The poster felt that their honour and credibility had been…