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
With the impending lapse of the 1915 act in 1919, the Rowlatt Committee was appointed to recommend measures to deal with the threat from the revolutionary movement. Noting the success of preventing detention and deportation measures in curbing the "Samiti", Rowlatt recommended an extension of the provisions of the Defence of India Act for a further three years with removal of "habeas corpus" provisions. The proposed Rowlatt acts were, however, met with universal opposition by the Indian members of the Viceroy's council, as well within the population in general, earning the title of "The Black Bills" from Mohandas Gandhi. Mohammed Ali Jinnah left the Viceroy's council in protest, after having warned the council of the dangerous consequences of enacting an extension of such an unpopular bill. Rowlatt's recommendations were enacted in the Rowlatt Bills. The agitations against the proposed Rowlatt bills took shape as the Rowlatt Satyagraha under the leadership of Gandhi, one of the first Civil disobedience movements that he would lead the Indian independence movement. The protests saw hartals in Delhi, public protests in Punjab as well as other protest movements across India. In Punjab, protests against the bills, along with a perceived threat of a Ghadrite uprising by the Punjab regional government culminated in the Jallianwalla Bagh Massacre in April 1919. After nearly three years of agitation, the government finally repealed the Rowlatt act and its component sister acts.