Few people know the RSS like Walter K. Andersen, who has studied the right-wing organisation for over five decades and co-authored The RSS: A View to the Inside with Shridhar D. Damle. In a freewheeling interview to Bhavna Vij-Aurora, the professor of South Asia studies at the School of Advanced International Studies in Johns Hopkins University speaks about the workings of the RSS, its past and its growing influence on Indian society and politics. Excerpts: