Throughout his writing career he was encouraged by political leaders such as Annadurai, M. Karunanidhi and M. G. Ramachandran.
In 1949, several of his followers led by C. N. Annadurai, decided to split from Dravidar Kazhagham, after an aged Periyar married a young woman Maniammai and anointed his young wife to act as his successor to lead the party, superseding senior party leaders.
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Annadurai wanted a separate Dravida Nadu but the DMK changed its stance with the Chinese invasion in 1962 and suspended its demand for the length of the war and supported India for raising funds for the war.
However, due to the differences between its two leaders Periyar and C.N. Annadurai, the party was split.
Although Annadurai had asked students to return to classes and leave the agitation, some high profile leaders in DMK were still active and popular within the students.
Pillai received the Kalaimamani Award from the Tamil Nadu Government under the chief minister Annadurai.
Famous people who have at one time or another lived in the bachelor pads of Triplicane include political figures Periyar, Annadurai and Karunanidhi.
Moreover, Annadurai was politically inclined towards Rajagopalachari’s Swatantra Party, whereas Sampath was keen to ally with the Communist Party of India.
Tamil film actor and Annadurai's friend S. V. Sahasranamam saw the 1936 Frank Capra film Mr. Deeds Goes to Town which was having a successful theatrical run in the late 1940s in Madras.