Gabrielle Rifkind offers a unique insight into the psychology of political extremism. When we talk about IS and similar groups, we approach them as political organisations. What, however, would Sigmund Freud have made of these deadly entities? We need to ask the question: Do the inner disquiets of Islam make more sense to psychologists than to Imams? In her new book,The Psychology of Political Extremism: what Sigmund Freud would have thought about Islamic State, Rifkind argues t...