Massacre
6 events, 1920 to 2018; 2 marked as turning points.
1920
Police fired on Piramalai Kallar villagers at Perungamanallur near Madurai who resisted registration under the Criminal Tribes Act.
1968
Around 44 Dalit agricultural labourers' family members, mostly women and children, were burnt to death at Kilvenmani in Thanjavur district.

1993
Palar landmine blast by Veerappan's gang
A landmine attack by the sandalwood smuggler Veerappan near Palar killed 22 members of a police and forest team from Tamil Nadu.

1997
Dalit panchayat president K. Murugesan and six other Dalit men were murdered at Melavalavu near Madurai by members of a dominant caste.
1999
Manjolai labourers massacre on the Tamirabarani
Seventeen people, mostly Dalit tea estate workers, died in the Tamirabarani river at Tirunelveli while fleeing a police lathi-charge.
2018
Thoothukudi anti-Sterlite police firing
Police fired on protesters marching against the Sterlite copper smelter in Thoothukudi, killing 13 people; the state ordered the plant closed.