Riots
14 events, 1882 to 2022; 3 marked as turning points.
1882
Hindu-Muslim riots broke out in Salem over a procession route past a new mosque; the trials that followed made C. Vijayaraghavachariar famous.
1899
In and near Sivakasi, Maravar-Nadar clashes killed 22 people and burnt hundreds of houses until troops stepped in.
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.

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.
1983
Black July and the arrival of Sri Lankan Tamil refugees
Anti-Tamil pogroms in Sri Lanka in July 1983 sent the first large wave of Sri Lankan Tamil refugees to Tamil Nadu.

1991
Anti-Tamil violence in Karnataka over Cauvery award
Mobs attacked Tamils in Bangalore, Mysore and other parts of southern Karnataka after the Cauvery interim award was gazetted.
1995
About 600 policemen raided the Dalit village of Kodiyankulam in Thoothukudi district, destroying property amid caste clashes in southern Tamil Nadu.
1997
The killing of a traffic constable in Coimbatore was followed by communal riots in which 18 Muslims and 2 Hindus were killed.
2012
Mobs burned Dalit homes in three villages near Dharmapuri after an inter-caste marriage.
2013
At Marakkanam, PMK cadres heading to a Vanniyar youth festival clashed with Dalit villagers, setting off violence in the northern districts.
2015
Seshasamudram violence over a Dalit temple car procession
A dominant-caste mob attacked the Dalit colony of Seshasamudram and burned a temple car on the eve of its procession.
2022
Violence at Kaniyamoor school over student's death
Protests over the death of a Class 12 student at a private residential school in Kallakurichi district turned violent.