Bania Gandhi was treated as an 'untouchable' and kicked out off a train in South Africa ---- He came back to India and demanded Independence from British;
SC/ST are treated as 'untouchable' for thousands of years in India ---- Why shouldn't SC/ST demand Independence from India https://www.change.org/p/independent-nation-for-300-million-india-s-untouchables http://www.petition2congress.com/20011/endorse-independent-nation-300-million-indias-untouchables/