What is called a Dravidian culture? Is it existing only in Tamil Nadu?

Whenever opportunity he gets, Former Tamil Nadu CM always blames that Dravidian culture is in danger due to Paarpana(Brahminised) or Aryan invaders, and this is the one of the reasons for the defeat of DMK in the recent Assembly polls. Now, I want to know whether the so called Dravidian culture has its... show more Whenever opportunity he gets, Former Tamil Nadu CM always blames that Dravidian culture is in danger due to Paarpana(Brahminised) or Aryan invaders, and this is the one of the reasons for the defeat of DMK in the recent Assembly polls.

Now, I want to know whether the so called Dravidian culture has its "limits" only in Tamil Nadu or all the four States of South India???
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