In 1935, after an unsuccessful five-year campaign to gain the right to enter Hindu temples, Ambedkar decided if you can’t beat them, leave them. He declared “I was born a Hindu, but I will not die a Hindu” He urged untouchables to “change your religion”: reject Hinduism and convert to a religion that doesn’t recognize caste or untouchabliity.
Both Christianity and Buddhism fit the description, but Ambedkar leaned toward Buddhism, which had ceased to be a living religion in India when Muslim invaders destroyed its temples and monasteries in the twelfth century, On October 4, 1956, after twenty years of study and writing on the subject, Ambedkar and thousands of other dalits converted to Buddhism in a massive ceremony. In the following years, more than four million dalits declared themselves Buddhists and stepped outside the mental framework of the caste system.
Dalit is also not preferred by many South Indians. There is a movement to simply use their caste names as their identity. As they wish!
They're funny people.