Political history of Sri Aurobindo
Anushilan Samiti was founded as an attempt to organize Bengali youth through a program of physical fitness and spiritual training for a nationalist program. By 1902, Calcutta had three societies working under the umbrella of Anushilan Samity, a society earlier founded by a Calcutta barrister by the name of Pramatha Mitra. These included Mitra's own group, another led by a Bengali lady by the name of Sarala Devi, and a third one led by Aurobindo Ghosh. The Anushilan Samiti had Aurobindo and Deshabandhu Chittaranjan Das as the vice-presidents, Suren Tagore the treasurer. Jatindra Nath Banerjee (Niralamba Swami), Bagha Jatin, Bhupendra Nath Datta (Swami Vivekananda's brother), Barindra Ghosh were among other initial leaders.
By 1905, the work of Aurobindo and his brother Barin Ghosh allowed Anushilan Samity to spread through Bengal.
Shripad Amrit Dange
M.N. Roy, an ex-member of the Anushilan Samiti, perhaps the most important secret revolutionary organisation operating in East Bengal in the opening years of the 20th century, went to Moscow in by the end of April 1920. The new Russian government under Lenin evinced interest in him and encouraged him to form an Indian Communist Party. Roy went on to found the émigré Communist Party of India on 17 October 1920 in Tashkent. On his return to India, M.N. Roy who had read "Gandhi Vs. Lenin" met Dange in 1922. Dange at that time was closely associating with Lotvala to spread Marxian ideas. It was during this period that Dange grew in prominence as a Marxist; a sure way those days to invite antagonism from the British Government.