As per Hinduism, the one who has realised Brahman - Self is Brahmin. Brahmin is not by birth. All casts were same there was only division of Labour. Castism was introduced by British to divide Hindus as was done by Moghuls continued by Secularists and Leftists - who are misquoting History to blame Hindus. Adi Shankaracharya was given realisation by a Chandala - this is true Hinduism. Vande Mataram