David Renton is a barrister, historian and anti-fascist activist. He is the author of Fascism Theory and Practice.---- ----His new book is The New Authoritarians: Convergence on The Right---- ----What are the characteristics of authoritarians and authoritarianism?---- ----Are there authoritarians on both the left and right?---- ----What kind of person becomes an authoritarian---- ----What is the nature of today' s authoritarian movements?