History of the Anushilan Samiti
Around 1902, Aurobindo Ghosh arranged for Bannerjee to return to Calcutta to begin organisational work, where he began a gymnasium and a youth society. It was at this time that Bannerjee came in touch with Vibhuti Bhushan Bhattacharya, Sarala Devi Ghoshal and Pramathanath Mitra. In Calcutta, a few clubs and societies were still active at the time. Most notable was a gymnasium in Ballygunge Circular Road run by Sarala Devi herself, a second was an organisation named "Anushilan Samiti" founded by Satish Chandra Basu with the patronage of Pramathanath Mitra. A third one was a youth club called "Attōnnōti Samiti" (Self-improvement society) in central Calcutta.
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.