Hindu Extremism - 3,000 years in the making

For 3,000 years, I have been oppressed

This boy, along with 250 million of his people, have been told by the upper castes of India that they are less than human. If even their shadows falls on an upper caste, it pollutes them. The Dalit Freedom Network (DFN) is working with a growing number of individuals, foundations, and organizations outside of India to help support organizations that are within India to help the Dalits (doll-leet) gain their freedom. Take a moment and learn about the most oppressed people of all mankind…

Dalit Network

What is it that the Upper class Hindu Extremists get out of repressing the lower cast? Do the upper class Hindu Extremists own everything in Hindustan and they want to continue ruling the nation with an iron fist or something?