"The community of corpse burners or Doms take pride in their ability to give moksh but it's also a way of justifying their place in a society that otherwise shuns them, humiliates them and treats them as untouchables. They believe they have religious capital. But at the end of the day, there are no privileged caste people who want to do this job. That's why the Doms are continuing to do this job and that's why they are not able to break through the caste barrier" - Radhika Iyengar, author, Fire on the Ganges talks to Manjula Narayan about her book that documents the customs, harrowing work and lives of the keepers of the sacred fire, the Doms of Varanasi