The differences between Ambedkar and the new Communist Party of India were not superficial. They went back to first principles. Communists were people of The Book, and The Book was written by a German Jew who had heard of, but had not actually encountered, Brahminism. This left Indian communists without theoretical tools to deal with caste. Since they were people of The Book, and since the caste system had denied Shudra and Untouchable castes the opportunity of learning, by default the leaders of the Communist Party of India and its subsequent offshoots belonged to (and by and large continue to belong to) the privileged castes, mostly Brahmin. … While Ambedkar believed that class was an important—and even primary—prism through which to view and understand society, he did not believe it was the only one. Ambedkar believed that the two enemies of the Indian working class were capitalism (in the liberal sense of the word) and Brahminism.

Ambedkar, B R, Annihilation of Caste_ The …, loc. 354