Being from Bangalore, which has seen very large scale migrations from all parts of India, Ithink there is a valid point in this. The migrants in a new place, initially small in numbers blend well with the local populace and culture and become integrated. A case in point are the substantial number of Iyengars in Karnataka, who spoke tamil at home but were gaints in the field of kannada literature (G.P.Rajarathnam, Gorur R.Iyengar). But the recent entrants into Karnataka, be they from Bihar or Bengal or U.P. come en masse, care little for the local sentiments and because they enjoy local numberical superiority, act in a manner that says "three hoots". Such actions may be from a minority of the migrants or majority do not endear themselves to the local populace. I have seen the change in attitude of commuters in city buses change in a little period of 5 years from people who listened to the conductor or other passengers to get away from the door so others can get in or out to those who stare at you with indifference when requested to move. Not all of them may be migrants, but this culture was defninitely absent earlier. Speaking loudly so that all the bus can hear your converstion is another trait that marks the N.Indian migrant instantly. Migrants should be like the parsi sugar in milk, not drops of lime which break it.
