The Anti-Hindi agitation of 1937–40 is a series of protests that happened in Madras Presidency of the British Raj during 1937-40. It was launched in 1937 in opposition to the introduction of compulsory teaching of Hindi in the schools of the presidency 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 (later Dravidar Kazhagam). The agitation, which lasted three years, 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 The mandatory Hindi education was later withdrawn by the British Governor of Madras Lord Erskine in February 1940 after the resignation of the Congress government in 1939.
The Republic of India has hundreds of languages. According to the Census of 2001, there are 1,635 rationalized mother tongues and 122 languages with more than 10,000 speakers. During the British Raj, English was the official language. When the Indian Independence Movement gained momentum in the early part of the 20th century, efforts were undertaken to make Hindustani as a common language to unite various linguistic groups against the British Government. As early as 1918, Mahatma Gandhi established the Dakshin Bharat Hindi Prachar Sabha (Institution for the Propagation of Hindi in South India). In 1925, the Indian National Congress switched to Hindustani from English for conducting its proceedings. Both Gandhi and Jawaharlal Nehru were supporters of Hindustani and Congress wanted to propagate the learning of Hindustani in non-Hindi speaking Provinces of India. The idea of making Hindustani or Hindi the common language was not acceptable to Periyar, who viewed it as an attempt to make Tamils subordinate to North Indians.