The beginning of Dravidian separatist movement goes back to late 1930s when leaders of Tamil and other Dravidian communities such as Karnataka, Malayalam, Tamil and Telugu got together to form Justice Party. This party was later changed its name to DMK in the 1940s. DMK abandoned its “independence for Dravida Nadu” demand in 1963 immediately after the Indian Parliament passed the Sixteenth Amendment to the Indian Constitution that prohibited those who advocate separatism from running for public offices (such as Indian parliament and state legislative assembly)
Later, as the other Dravidian leaders gradually distanced themselves from Tamil leaders, mainly due to their people preferring to be united with the Hindustan rather than with a Dravidanadu, Tamil Nadu concept still existed and it was the Tamil race who thought they were better off breaking off form India. With the ignition of Sir lankan Tamil separatist movement in Sri Lanka, racist Tamils grabbed the opportunity to unite under the murderer Prabhakaran to help set up a fictitious Eelam in SriLanka ,which they thought can be made use of to fight India.