BTW, if you are at least as interested in this period as I am, I can recommend A rising man, by Abir Mukherjee. Set in Calcutta in April 1919, it is a well constructed whodunit enveloping a perfectly good history lesson. No evil guys, no heroes, just imperfect, complicated humans, trying to do what seems right to them or what seems to be their right to do, wreaking havoc on each other nevertheless.
Peter