S. Ramadoss
5 events, 1987 to 2013.
1987
Vanniyar reservation agitation
The Vanniyar Sangam led a road blockade agitation in northern Tamil Nadu demanding separate reservation for the Vanniyar community.
1989
Separate 20% quota for Most Backward Classes
The DMK government split the 50% backward class quota into 30% for Backward Classes and 20% for Most Backward Classes and Denotified Communities.
S. Ramadoss founded the Pattali Makkal Katchi, a party rooted in the Vanniyar Sangam and the 1987 reservation agitation.

1998
AIADMK allies with the BJP; NDA wins 30 seats in Tamil Nadu
Breaking its long alliance with the Congress, the AIADMK joined the BJP-led front, which won 30 of Tamil Nadu's 39 Lok Sabha seats.
2013
At Marakkanam, PMK cadres heading to a Vanniyar youth festival clashed with Dalit villagers, setting off violence in the northern districts.