Sanskritization VS Nirbakization

Rabindranath Tagore once wrote, "For the caste system in India, maximum people of the country could not contribute their best of wealth to the universal manhood. Those are the Sudras. If the best of their thoughts without obstruction were stated, they could change India's and world's cultural ideas......today the ideas of those NIRBAKs of India should be reflected as far as possible..." These 'Nirbaks', who are basically marginal people in our society and are looked down upon by the so-called educated elite. The author carried a thorough research on such an indeginous people, namely Kudmis, being a part of their society and wrote the history of their cultural resistance.