I think there is only North india and South india but not "NORTH INDIAN" OR "SOUTH INDIAN". north and south should be used only for geographical purposes and not to identify an individual, this thinking should be aired by the media and the habit should be inculcated into every one from his/her childhood. Govt should take very strict action against anyone who tries to divide the country by highlighting the region factor. This can be a very serious beginning and can spread to other parts of the country as well, which inturn can become a nationwide propaganda.
We are all INDIANS and every citizen has the constitutional right to live and prosper in any part of the country. Any who offends the basic constitutional right of the citizen ,the govt should bring down everyone to justice, as this is the sole meaning of "Democracy"