High Quality Content by WIKIPEDIA articles! Tamil nationalism has developed among the Tamils of both Tamil Nadu and Sri Lanka. It expresses itself in the form of linguistic purism ("Pure Tamil"), of irredentism ("Dravida Nadu"), and of Anti-Brahminism ("Self-Respect Movement"). Tamil irredentism in Sri Lanka (Tamil Eelam) was the casus belli of the Sri Lankan Civil War of 1983 to 2009. In the Republic of India, Tamil irredentism led to the anti-Hindi agitation during the 1960s.