Brahmins did indulged in a practice and injected new rules and regulation to take control over other castes and to keep away all other caste people away from Knowledge.( Not to Dalit alone ) But that was the history, which saw the downfall of great religion like hinduism.
but keeping in mind the current scenerior, instead of breaking apart, it is the time to re-unite as one. Be indian and facilities should be given to poor people irrespective of caste and religion.