BACK in the '60s, Rajendra Singh aka Rajju Bhaiya, a professor of physics at Allahabad University would often turn up to lecture his students clad in RSS uniform— broad khaki knickers and white shirt—straight from the morning shakha. Not that anyone took much notice. The RSS was then on the fringe, too discredited and marginalised a force to be taken seriously. The country was still reeling from the shock of Mahatma Gandhi's assassination by a Hindu zealot.