On the face of it, “Why do so many angry women seem to have blue hair?” doesn’t seem like one of the most pressing issues of our time. Yet the more you think about it, and the more time you spend on the internet, the more you realise how much it matters. If you’re young, were born with XX chromosomes, and want the world know you wield poison and you’re not afraid to use it, there’s no clearer or more immediate way to signal how dangerous you are than dipping your coconut into a vat of de rigueur Manic Panic. Take one look at Twitter – or, worse, Tumblr – and you’ll see that, increasingly, the barmiest, angriest feminist cry-babies in the world are rallying together under the Blue Banner. Now I’m not saying for one minute that every blue-haired woman is a man-hating, sociopathic bunny boiler, in the same way not all Twitter users with ‘I voted Corbyn’ across the bottom of their avis are not all sanctimonious, retrograde socialists who want to take the UK back to the warm beer/pork pie and sex-with-the-pet-whippet days of the 1960s. Some are no doubt perfectly well-adjusted and productive members of society. But there are enough blue goons to