India's 'untouchable' women face discrimination even in schemes meant to help them

But then other vendors found out who Seema was.

They yelled at her customers for buying her samosas. They threatened her husband for "polluting" the market by selling food prepared by her. She put up with it for months before giving up.

What had Seema done wrong? She had been born a Dalit, a member of the "untouchables," the lowest group in India's ancient and now officially obsolete caste system.

Seema didn't look, talk or behave any differently. But someone had found out her family name, which indicated she was descended from pig farmers, a job only done by Dalits. That was enough.

A rigid occupational hierarchy

While there is some debate about British colonialism amplifying it, the origins of India's caste system go back thousands of years, and are deeply entwined in Hinduism, the religion followed by about 80% of India's population.

Caste is essentially the stratification of people into a rigid occupational hierarchy.

According to the Manusmriti, considered one of Hinduism's most important books of law, people are born into one of four castes, depending on their conduct in past lives.

Credit: Wikimedia Commons, CC BY

Dalit women continue to do much of India’s worst work, such as picking over garbage dumps for scraps to recycle. Credit: Shutterstock

Seema Ghasi wanted a microloan to set up a somosa stall. Credit: Shutterstock