Question

when all the religions are given a family name in our country, why do they discriminate against each other's religious here. ?

Answer 1

because they have much ego

Answer 2

yeah all the religious beliefs r given a name well but let's take a eg of ur class isn't anyone better than u and u appreciate it hoping one day u ll be above him as u might think that ppl of such religion care about it a lot and they just can't see ppl going and growing there own religion and he ll think that this religion is in danger and think it from everyone's point of few so it's a inevitably a human nature u can't control it.
hope it helps