Anti-Hindi agitation of 1937–1940
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).
Source: Wikipedia — Anti-Hindi agitation of 1937–1940 (CC BY-SA 4.0)