Dhaka Anushilan Samiti
Dhaka Anushilan Samiti was a branch of the Anushilan Samiti founded in the city of Dhaka in November 1905. Initially a group of eighty under the leadership of Pulin Behari Das, it "spread like wildfire" throughout the province of East Bengal. More than 500 branches were opened, linked by a "close and detailed organization" to Pulin’s headquarters at Dhaka. It absorbed smaller groups in the province and soon overshadowed its parent organisation in Calcutta. Branches of Dhaka Anushilan emerged in the towns of Jessore, Khulna, Faridpur, Rajnagar, Rajendrapur, Mohanpur, Barvali, Bakarganj and other places. Estimates of Dhaka Anushilan Samiti's reach show a membership of between 15,000 and 20,000 members. Within another two years, Dhaka Anushilan would devolve its aims from the Swadeshi to the dedicated aim of political terrorism. The "Dhaka Anushilan Samiti" embarked on a radical program of political terrorism. It broke with the "Jugantar group" due to differences with Aurobindo's approach of slowly building a base for a revolution with a mass base. The Dhaka group saw this as slow and insufficient, and sought immediate action and result. It was responsible for a number of political assassinations, most notably the murder of D.C. Allen. However, it reached a temporary halt after the arrest and deportation of Pulin Das and the Barisal Conspiracy Case in 1913. Dhaka Anushilan decided not to participate in the German plot of World War I. After the war, it continued in its violent movement, and some of its members went on to form the Neo-violence group.
Anushilan Samiti
When the "Samiti" first came into prominence following the Muzaffarpur killings, its ideology was felt to be influenced by European anarchism. Lord Minto resisted the notion that its action may be the manifestation of political grievance by concluding that: 
However others disagreed. John Morley was of the opinion that political violence exemplified by the "Samiti" were manifestations of Indian antagonism to the government, and was running a natural course which was culminating in assassinations. Historians conclude that although there were influences of European nationalism and philosophies of liberalism. In Bengal at large, through the decades 1860s and 1870s, there arose large numbers of "akhras", or gymnasiums consciously designed along the lines of the Italian Carbonari which drew the youth. These were influenced by the works of Italian nationalist Giuseppe Mazzini and his Young Italy movement. Aurobindo himself studied the revolutionary nationalism of Ireland, France and America. Hem Chandra Das, during his stay in Paris, is also noted to have interacted with European radical nationalists in the city, returning to India an atheist and Marxist.