Muthuvel Karunanidhi was an Indian writer and politician who served as Chief Minister of Tamil Nadu for almost two decades over five terms between 1969 and 2011. He is popularly referred to as Kalaignar (Artist) and Mutthamizh Arignar for his contributions to Tamil literature. He had the longest intermittent tenure as Chief Minister of Tamil Nadu with 6,863 days in office. He was also a long-standing leader of the Dravidian movement and ten-time president of the Dravida Munnetra Kazhagam political party. Karunanidhi has the record of never losing an election to the Tamil Nadu Assembly, having won 13 times since his first victory in 1957. Before entering politics, he worked in the Tamil film industry as a screenwriter. He also made contributions to Tamil literature, having written stories, plays, novels, and a multiple-volume memoir. Karunanidhi died on 7 August 2018 at Kauvery Hospital in Chennai after a series of prolonged, age-related illnesses.

The anti-Hindi imposition agitation of 1937–1940 refers to a series of protests that happened in Madras Province of British India during 1937–1940. It was launched in 1937 in opposition to the introduction of compulsory teaching of Hindi in the schools of the province by the Indian National Congress government led by C. Rajagopalachari (Rajaji). This move was immediately opposed by E. V. Ramasamy (Periyar) and the opposition Justice Party. The agitation, which lasted for about 30 months, was multifaceted and involved fasts, conferences, marches, picketing and protests. The government responded with a crackdown resulting in the death of two protesters and the arrest of 1,198 persons including women and children. The mandatory Hindi education was later withdrawn by the British governor of Madras Lord Erskine in February 1940 after the resignation of the Congress government in 1939.