Dozens of young redheaded men and women are replacing the ritual bullying of the playground with the ritual strictures of radical Islam, perhaps – at least according to some experts – as a result of the bullying and persecution they endure early in life. You’ve likely already made the connection between ginger hair and home-grown Islamic radicals yourself. Subconsciously, perhaps, from newspaper reports showing carrot-topped wannabe jihadis from Bradford, and TV clips of auburn brothers in east London. What you probably don’t know is just how vastly over-represented redheads are in the ranks of Islamist converts. There are no surveys...