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.
Ponnambalam Arunachalam
Arunachalam's became interested in politics during his university days. He agitated for political reform whilst still working in the civil service. In retirement Arunachalam became involved in politics, founding the Ceylon National Association and the Ceylon Reform League, of which he was chairman, in 1917. He was one of the founders of the Ceylon National Congress (CNC) in 1919 and served as its first president from 1919 to 1920. Arunachalam left the CNC in 1921 following disputes about communal representation in the Legislative Council, which Arunachalam opposed, and the connivance of Sinhalese politicians which resulted in no Tamils being elected from Western Province at the 1921 legislative council election. He founded the Ceylon Tamil League in 1923.