Rationalism
13 events, 1879 to 2023; 3 marked as turning points.
1879
Birth of E. V. Ramasamy (Periyar)
E. V. Ramasamy, later known as Periyar, founder of the Self-Respect Movement and the Dravidar Kazhagam, was born at Erode.

1925
Periyar leaves Congress and starts the Self-Respect Movement
After his resolution on communal representation was not allowed at the Kanchipuram conference, E. V. Ramasamy left the Congress and began the Self-Respect Movement.

E. V. Ramasamy began publishing the Tamil weekly Kudi Arasu, which became the main voice of the Self-Respect Movement.

1929
First Provincial Self-Respect Conference at Chengalpattu
The first provincial conference of the Self-Respect Movement at Chengalpattu passed resolutions against caste and for women's rights.

1931
Kudi Arasu editorial on Bhagat Singh's execution
Writing in Kudi Arasu, Periyar faulted Gandhi over Bhagat Singh's execution, a sign of the journal's increasingly leftist stance.

Periyar tours Europe and the Soviet Union
Periyar E. V. Ramasamy toured Europe and spent three months in the Soviet Union, an experience that shaped his later politics.

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.

1952
The film Parasakthi, written by M. Karunanidhi and marking Sivaji Ganesan's debut, was released and sparked controversy.
1964
Bharathidasan, the rationalist Tamil poet influenced by Subramania Bharati and Periyar, died in Madras.

1968
Self-Respect marriages given legal validity
The Hindu Marriage (Tamil Nadu Amendment) Act, 1967 became law, legalising marriages performed without priests or Vedic rituals.

1973
Death of Periyar E. V. Ramasamy
Periyar E. V. Ramasamy, founder of the Self-Respect Movement and leader of the Dravidar Kazhagam, died in Vellore aged 94.

1997
Periyar University established at Salem
Periyar University, named after E. V. Ramasamy, was established at Salem on his birth anniversary.
2023
Udhayanidhi Stalin's remarks on Sanatana Dharma
Minister Udhayanidhi Stalin's call to eradicate Sanatana Dharma drew national controversy and court cases.
