Olivier theatre, LondonAnupama Chandrasekhar artfully unpicks the forces of history with a tale of violence and colonialism that echoes into today When it comes to taboo-busting, Anupama Chandrasekhar has form. She refashioned Ibsen's Ghosts into a reflection on the sexual violence in India. Now she finds a paradigm for Hindu nationalism in the man who in 1948 assassinated Gandhi. It's exhilarating to see such big, b…