Dravidians were never hindus, they were forcibly made dalits by crafty brahmins. Brahmnism came from foreign, where as aborginal dravidians were non-vedic.
Trust the historians and archaelogist, none of vedic god or vedic evidence was found in indus valley, though brahmins are good enough in painting every thing with vedic brush....
Today red indians are slave to white in america, australia, same way dravidians were made slave by brahmins(aryans) from europe around 3500 years ago.... Today most draividians are dalits, slaves and backward and their temples and heritage were converted. Modern historical research proved that DRavidians followed sramanic systems. Their temples are conveted to vedic and that is the reason why most hindu gods in present south temples are fully covered to hide identity. Remove cloths and jewellary from one deity of famous god from famous temple, it will be proven by itself.
I hope hindu fanatics doesn;t come up and say this is insult, but sir history and facts are real, rest is all bogus.....