Racism - Why Indians cry ?

As per part of NTU rules, students have to vacate hostel after 1 year. So my time have come and i am looking for room now a days. This strange incident happened with me today. I called one guy Dr. Atanu Kumar Das(doing Postdoc in NTU) who gave a adv about a room, however i was surprise to see the questionaire that happened with me on phone.

Atanu Kumar Das (Dr): Hello
Me : Is it Mr. Atanu Kumar Das ?
Atanu Kumar Das (Dr) : Yes
Me : I saw one adv in public folder about 1 room from you.
Atanu Kumar Das (Dr) : Where are you from ?
Me : I am from India.
Atanu Kumar Das (Dr): Oh i mean which part of India ?
Me : North Indian
Atanu Kumar Das (Dr) : Specifically which part of north India ?
Me : I started feeling irritated and bad what sort of question is this ? I replied Punjab
Atanu Kumar Das (Dr) :Sorry to say but i cant give room to North Indians , actually i have some bad experience....
Me : Ok ..
....

and then i did send a email to this Guy (which i always do... after seeing people's typical weird behavior) .. although he is one research fellow ( PostDoc) in NTU and i understand this kind of racism is not acceptable in Singapore, however now i don't want to complain but i was thinking why people from India are so much state oriented or in other words against a particular state oriented and if they are like that then how come Indians can complain about racism if they experience in other country.
We have Mr. Raj Thackrey, who only see Maharashtra for only Marathi Manus. Compairing to that i was surprise to see when Singapore's prime- minister said we should welcome foreign talent and there is still space for them although i think Singapore has become very conjusted.

Well thats just a example, Dr Das could have really had bad experience otherwise he would not have behaved in a strange way however it reminds me - we Indians yet to learn that people from other state/language are also people and we should welcome all. No country or region or place can grow if they have this ME and MINE kind of mentality. It may look nice or attractive for a while but it has adverse consequences in future !

Anyway just another experience - We Indians should change our regional racism behavior, rather then shouting at foreign countries .... no one is perfect - not me atleast and not you also !