Anushilan Samiti
By 1902, Calcutta had three secret societies working toward the violent overthrow of British rule in India. One was founded by Calcutta student Satish Chandra Basu with the patronage of Calcutta barrister Pramatha Mitra, another was led by Bengali woman Sarala Devi and the third was founded by Aurobindo Ghosh. Ghosh was one of the strongest proponents of militant Indian nationalism at the time. By 1905 the work of Aurobindo and his brother, Barin, enabled Anushilan Samity to spread throughout Bengal. Nationalist writings and publications by Aurobindo and Barin, including "Bande Mataram" and "Jugantar", had a widespread influence on Bengal youth. The 1905 partition of Bengal stimulated radical nationalist sentiments in Bengal's Bhadralok community, helping Anushilan acquire a support base of educated, politically-conscious and disaffected members of local youth societies. Its program emphasized physical training, training its recruits with daggers and "lathis" (bamboo staffs used as weapons). The Dhaka branch of Anushilan was led by Pulin Behari Das, and branches spread throughout East Bengal and Assam. More than 500 branches were opened in eastern Bengal and Assam, linked by "close and detailed organization" to Pulin's headquarters at Dhaka. It absorbed smaller groups in the province, soon overshadowing its parent organisation in Calcutta. Branches of Dhaka Anushilan emerged in Jessore, Khulna, Faridpur, Rajnagar, Rajendrapur, Mohanpur, Barvali and Bakarganj. Estimates of Dhaka Anushilan Samiti's reach indicate a membership of 15,000 to 20,000. Within two years, Dhaka Anushilan devolved its aims from the Swadeshi to that of political terrorism.
Anushilan Samiti
In its fight against the Raj, the "Samiti"'s members who turned approvers and the Bengal Police staff who were investigating the "Samiti" were consistently targeted. A number of assassinations were carried out of approvers who had turned crown-witnesses. In 1909 Naren Gossain, crown-witness for the prosecution in Alipore bomb case, was shot dead within Alipore Jail by Satyendranath Bose and Kanai Lal Dutt. Ashutosh Biswas, an advocate of Calcutta High Court in charge of prosecution of Gossain murder case, was shot dead within Calcutta High Court in 1909.In 1910, Shamsul Alam, Deputy Superintendent of Bengal Police responsible for investigating the Alipore Bomb case, was shot dead on the steps of Calcutta High Court. Failure of prosecution in violence linked to the "Anushilan Samiti" in a number of cases under the Criminal procedures act 1898 led to a special act whereby crimes of nationalist violence were to be tried by a special tribunal composed of three high-court judges. December 1908 saw the passage of the Criminal Law amendments under the terms of Regulation III of 1818 and to suppress associations formed for seditious conspiracies. The act was first applied to deport nine Bengali revolutionaries to Mandalay prison in 1908. Despite these measures however, high standards of evidence demanded by the Calcutta High Court, insufficient investigations by police, and at times outright fabrication of evidence led to persistent failure to tame nationalist violence. Police forces felt unable to deal with the operations of secretive nationalist organisations, leading to demands for special powers. These were opposed vehemently in the Indian press, which argued against any extension of already wide powers enjoyed by the police forces in India, and which it was argued was being used to oppress Indian people.