It's been a year since 22 people, including young girls, were slaughtered at a pop concert in Manchester. The speed with which this murderous act disappeared from public consciousness was alarming, and not accidental. Anyone who bristles at the new extremism and insists it is something we must talk about and tackle, can expect to be branded an 'Islamophobe'. The 'phobe' slur is used to shame people into silence. This is what Manchester revealed: terrorists hold our lives in contempt, and the political set holds our opinions in contempt.