Lal Bahadur Shastri
4 events, 1963 to 1965; 2 marked as turning points.
1963
Kamaraj Plan; M. Bhaktavatsalam becomes Chief Minister
Kamaraj resigned as Chief Minister under his plan for senior leaders to work for the party, and M. Bhaktavatsalam succeeded him.

1964
Kamaraj becomes Congress president and 'kingmaker'
As president of the Indian National Congress, K. Kamaraj guided the selection of two Prime Ministers.

Sirima-Shastri Pact on people of Indian origin in Ceylon
India and Ceylon agreed that 525,000 stateless people of Indian origin, mostly Tamil plantation workers, would be repatriated to India.

1965
Student-led protests against Hindi becoming the sole official language turned into statewide riots, with police firing and self-immolations.