Anubhav Sinha has made a surfeit of movies, right from the musical Tum Bin (2001) to the superhero fantasy, Ra.One (2011) starring superstar Shahrukh Khan in the lead, in the past 17 years. The engineer-turned-director now returns with a thought-provoking movie, Mulk on a seemingly controversial subject. In an exclusive interview with Giridhar Jha of Outlook on the eve of the film’s release, Sinha spells out why the making of this Rishi Kapoor and Taapsee Pannu starrer has been a liberating experience for him. Excerpts: