Tamilians / Madrasis can never avoid talkig caste,they are anti-national by their actions. They hate our own language Hindi and pamper English. During the independence struggle, except Subrahmanya Bharati, no other Madrasi has played any role worth mentioning. Now,the present DMK government supports foreign Tamilians only because for love of their language sidelining national interests.
Look at the messages posted by these Madrasis, they invariably will have reference to some castes.
Let wisdom dawn upon these people and let them consider every citizen of this country as Indian first and Indian last.