Babasaheb was not against HINDUTVA and he wanted SANSKRIT as the official language of INDIA....
HE WAS A SARASWAT BRAHMIN. HIS NAME IS AMBAVADEKAR. HIS SECOND WIFE WAS A BRAHMIN...
http://kiranasis.blogspot.in/2015/04/ten-things-about-br-ambedkar-that-you.html?m=1