Humans. Whose idea were they anyway?

Accounts have emerged of members of the former Untouchable castes not being allowed to drink clean water from a tank provided by Unicef because other castes believed it would pollute the water in the tank. Dalits, as the former Untouchables are known today, have been thrown out of government relief camps by the other survivors staying there.

[...]

Dalit children were not even allowed to use the basic open latrines at relief camps, according to Janyala Srinivas, a reporter for The Indian Express. Dalits at one camp who asked for some of the food supplies intended for everyone that the fishermen were hoarding were thrown out and had to spend the rest of the night in the road.

In many areas it was reportedly the Dalits who had to dispose of the bodies of the dead because high-caste Hindus feared they would be polluted if they handled the corpses.

[...]

Untouchability was made illegal in India after independence. But, decades after Mahatma Gandhi told his followers that he "would far rather Hinduism died than untouchability lived", the practice is still widely followed all over India, and Dalits face daily persecution from birth until death.
  Independent article