Arrest
28 events, 1838 to 2025; 5 marked as turning points.
1838
Ayya Vaikundar imprisoned by the Travancore king
Ayya Vaikundar, founder of Ayyavazhi, was arrested on the orders of the Travancore king and held at Singarathoppe jail.

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.

1917
The Madras government interned Annie Besant at a hill station for her Home Rule activities, provoking protests across India.

1927
Nationalists in Madras campaigned for the removal of the statue of Colonel James Neill from Mount Road.

1928
Workers of the South Indian Railway struck against planned layoffs of over 3,100 employees, disrupting transport across South India.
1930
C. Rajagopalachari led a march from Tiruchirappalli to Vedaranyam to break the salt law, the Tamil counterpart of the Dandi March.

1935
Tamil translation of 'Why I am an Atheist' banned
Bhagat Singh's 'Why I am an Atheist' in Tamil was banned by the Madras government, which also arrested the translator and the publisher.

1937
Compulsory Hindi order and first anti-Hindi agitation
The Rajaji government's move to make Hindi compulsory in schools triggered a large anti-Hindi agitation led by Periyar, the Justice Party and Tamil scholars.
1938
Tamilar Padai march from Tiruchi to Madras
Known as the Tamilar Padai, anti-Hindi protesters marched from Tiruchirappalli to Madras, addressing meetings in towns and villages en route.
Periyar jailed and elected Justice Party president
E. V. Ramasamy was imprisoned for his role in the anti-Hindi agitation and was elected president of the Justice Party while in jail.

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.

1975
Indira Gandhi's government declared a national Emergency; the DMK government in Tamil Nadu opposed it.

1976
DMK workers jailed under MISA during the Emergency
After the DMK government's dismissal, many party workers including M. K. Stalin were jailed in Madras Central Prison under MISA.

Karunanidhi government dismissed; President's rule imposed
During the Emergency the Union government dismissed the DMK ministry and imposed President's rule in Tamil Nadu.

1986
DMK agitation against Navodaya schools
The DMK protested the National Policy on Education's Navodaya schools, seen as a route for Hindi imposition; the schools were not opened in Tamil Nadu.
1996
Jayalalithaa arrested in colour TV case
Former Chief Minister J. Jayalalithaa was arrested and remanded in judicial custody in a corruption case over the purchase of colour televisions.

2001
Midnight arrest of M. Karunanidhi
Former Chief Minister M. Karunanidhi was arrested at his Chennai home in the early hours in a case over the construction of city flyovers.

2002
MDMK leader Vaiko was arrested under the Prevention of Terrorism Act for a speech supporting the LTTE and spent over a year and a half in jail.

2004
Arrest of the Kanchi Shankaracharya
Jayendra Saraswathi of the Kanchi math was arrested in the Sankararaman murder case; he and the other accused were acquitted in 2013.

2011
Former Telecom Minister A. Raja and later Kanimozhi were arrested in the 2G spectrum case; a special court acquitted all accused in 2017.

2013
Student protests over Sri Lankan Tamils
Colleges were shut after students throughout Tamil Nadu protested over alleged war crimes against Sri Lankan Tamils.

At Marakkanam, PMK cadres heading to a Vanniyar youth festival clashed with Dalit villagers, setting off violence in the northern districts.
2019
Pollachi sexual assault and extortion case
Arrests in Pollachi exposed a gang accused of sexually assaulting and blackmailing many women, causing statewide outrage and protests.

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.
2023
Minister V. Senthil Balaji arrested by the ED
The Enforcement Directorate arrested Electricity Minister V. Senthil Balaji in a money laundering case linked to a cash-for-jobs scam.
2024
Kallakurichi illicit liquor deaths
Methanol-laced illicit liquor killed more than 60 people in Kallakurichi district.
2025
Custodial death of temple guard Ajith Kumar
Temple watchman Ajith Kumar died after being held by police in Sivaganga district over a theft complaint; the case went to the CBI.