But a fair-minded person can look around and see that it really is too crowded. Somebody needs to go. But who? Well, you start with the poorest. Or the newest. Or the one farthest away from yourself, however you define yourself. Immigrants hope, ultimately, to be in a position where they have the right to keep out new immigrants, to tell the next person to get off the train in your city that he must go back, he can't stay. That's when you know you're truly native.
From Maximum City by Suketu Mehta
So true for Mumbai or any other community/city/country in the world. This kind of xenophobia is a natural instinct, honed by generations of human evolution. Can we triumph over this instinct?