Let us assume that Aryans came in - what about Moghuls who came in 1000 years back and Christians who came in 450 years back -- Kazhagams are bending backwards to favour them -- in any case even before Dravidians there must have been some other race which has been destroyed by Dravidians.. Like Assam - Bodos claim that Assamese themselves are invaders .. Tamils are seen as invaders in Srilanka and Malaysia now .. where is this game going to end.?? All the rationalization of Aryan Dravidian divide is for personal profit ONLY.. Giving ideological colour to such arguements is pure selfishness and nothing else