There is a careful consideration to be made, however, in what we cheer: Is it our victory we are cheering, or is it the loss of the opponent? In today's case, it is specially true that we may be cheering the loss of Pakistan more than we celebrate our own victory. In a sport, as in life, for they are much too similar, it is important to bear in mind that we may end up on the bottom of the ladder just as soon as we got up there. Our victory may just be temporary and that should we be on the other side, we wouldn't feel to good about others cheering our loss.
I do want to however make sure that the moment is not lost: We must celebrate our successes, and if we feel the need to be vain, we must gloat. We must magnify our strengths if our conscience makes us. We must delve in vanity, we must feel proud or we must simply kiss the soil underneath and pray to a god above. But we must also be careful to tread within the boundaries of our security. This foresight is one that is Gandhian: "Do unto others," and this is an important thing today, most of all.
Let's cheer our victory and not the losses of our opponents. For if we won fair and square, they lost fair and square: and, well, there was a 50/50 chance. If for whatever reason one feels that he is compelled, by his consciousness or conditioning, to celebrate the losses of our opponent, he must by all means do it. But he must realize that in case that he was to be on the other side, he mustn't feel contempt for being on there.
For we all may not agree with what you do when you cheer the losses, but we may not even care about defending your right to do it. In this "need" to celebrate another's losses, one might be misusing his freedom - or the lack thereof.
And of course, Go India.