ON the very first day of the lockdown, March 25, a sanitation worker in Delhi, Suresh, died at a sewage treatment plant while his co-worker, Jasbir, was admitted to hospital in a critical condition. They were not only working in extremely hazardous conditions but they were also bereft of equipment considered essential for such work all over the world.Sanitation workers are acknowledged as being frontline warriors in the battle against Covid-19 but the reality of their caste means that this so-called recognition makes little difference to their conditions of living and social status.