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Bhaktisiddhanta Sarasvati was a Gaudiya Vaishnava religious leader and scholar. He was a staunch opponent of the Smarta Brahmins, who were the dominant Hindu religious authorities in Bengal at the time. Bhaktisiddhanta Sarasvati believed that the Smarta Brahmins had corrupted the original teachings of Vaishnavism, and he advocated for a return to the pure teachings of the Bhagavad Gita and other Vaishnava scriptures.