Well Prithviraj, there are people who supports Pakistan in Bangladesh, but there are also people who supports India. Can't generalize a whole nation being either this or that. Then, even in India there are places where you will see the Pakistani flag during an India Pakistan match.
firstlane, I agree with you, Sidhu shouldn't have mocked at BD like this, that's not great. But about people's comment, don't feel about that. There are comments of BD supporters elsewhere which may give rise to a similar feeling to Indian supporters.
Even in this forum, there are people making anti India comments. There is someone who has put in his signature "100% joy if India loses against any country". There are Indian supporters who may generalize the whole BD supporters with the above signature. They shouldn't, because not the whole of BD think like this. Isn't it?