See harijan in American Heritage Dictionary 4
noun pl. Harijan or Har·i·jans
Origin: Sanskrit harijanaḥ, person of Hari, child of God (coined as a euphemism for Untouchable by Mohandas K. Gandhi in 1931)
Origin: : Hariḥ, Hari, a name for Vishnu; see Hare Krishna
Origin: + janaḥ, person, child; see genə- in Indo-European roots.