Police Firing
13 events, 1908 to 2018; 3 marked as turning points.
1908
Arrest of V. O. Chidambaram Pillai and Tirunelveli unrest
The arrest of V. O. Chidambaram Pillai and Subramania Siva on sedition charges set off unrest in Tirunelveli and Tuticorin.

1920
Police fired on Piramalai Kallar villagers at Perungamanallur near Madurai who resisted registration under the Criminal Tribes Act.
1921
Buckingham and Carnatic Mills strike
Workers of the Buckingham and Carnatic Mills in Madras went on a prolonged strike against Binny and Co. over wages and conditions.
1928
Simon Commission boycott in Madras
Protesters in Madras demonstrated against the Simon Commission, and T. Prakasam famously defied police during the protest.

1942
Quit India Movement in the Tamil districts
Congress leaders in the Tamil region were arrested as the Quit India Movement began, followed by strikes, sabotage and police firing.

1953
Kallakudi agitation against the name Dalmiapuram
The DMK protested at Kallakudi against the renaming of the town as Dalmiapuram after an industrialist.

1954
Travancore Tamil agitation for merger with Madras
Tamils in southern Travancore-Cochin campaigned under Marshal Nesamony for the merger of Tamil-majority taluks with Madras State.
1957
Violent caste clashes broke out in Ramanathapuram district between Thevar and Dalit communities after the 1957 elections.
1965
Student-led protests against Hindi becoming the sole official language turned into statewide riots, with police firing and self-immolations.
1982
Mandaikadu Hindu-Christian clashes
Tensions between Hindus and Christians in Kanyakumari district escalated during the Mandaikadu temple festival, leading to police firing and deaths.
1987
Vanniyar reservation agitation
The Vanniyar Sangam led a road blockade agitation in northern Tamil Nadu demanding separate reservation for the Vanniyar community.
2011
Police opened fire on Dalits protesting at Paramakudi on the Immanuel Sekaran memorial day, and the death toll rose to seven.
2018
Thoothukudi anti-Sterlite police firing
Police fired on protesters marching against the Sterlite copper smelter in Thoothukudi, killing 13 people; the state ordered the plant closed.