Just to put things a bit in perspective here, many Indians have it in their psyche about the recent terror attacks which were traced back to Pakistan and which Pakistan did nothing about. The master minds are roaming free and preaching in Pakistan. I remember you yourself Captain Rishwat, claiming that as long as these guys don't break laws in Pakistan, its ok if they kill hundreds in other countries.
Now many of those people who were locally involved were brain washed guys who supported Pakistan. So it is nothing to do with the cricket match itself. Anti-Pakistan feeling is at a high currently in India. And those who support Pakistan are seen as potential terrorists for the above mentioned reasons. How can you support a country which hides people who master mind terrorist attacks in India? That's how the thinking goes
Now, if you want my opinions, I always say that you cannot rule an entire Region by force for long. We can only win over the Kashmiris by love and affection, not by banning their voice or forcing them. India has been working on this for a long time now. I believe these kind of Pakistan supporting voice are in the minority now. They are very vocal though because some people's livelihood and power depend on continuous strife over Kashmir and not having peace in the region.
But let's not undo our goodwill by such acts. Lets continue winning Kashmiris over with love and respect. We have been doing a good job of it and now most Kashmiris just want peace. Of course the few who don't want peace would try to drum up feelings, try to provoke others, etc. Best to ignore them