I might be doing disservice to those who faced those days by brushing off their miseries.
paki is to some extent an equivalent to the word nigger. I am certainly against words with obvious intent to offend.
We are talking about stereotypes. Indians are stingy, Indians are nerds, Indian wins spelling bees, stuff like that which is equivalent to the chant in focus.
If Indians demand shushing humour targeted at them, we would only invite more of it and from wrong section of society.
Right now anyone can go ‘come again’ and no one would bother. And come again is not so funny anymore.