I would not know if a child was a christian, but would if it were a muslim, mainly because the girl is wearing the head gear and so is the mother....just like the authodox Jews will be wearing clothing so others can identify what they stand for.
I am more threatened by the child being brought up to follow islam in a fanatical way than i am with a child brought up as a christian.....hopefull not all muslm children will go to Pakistan to learn how to hate the West, but the fanatical parents are more likely to be doing in what ever country they live in, its the influence it has on the child when they grow up which is the issue, and if it has affected the way they feel about their fellow human and hate is involved, then it only be a bad thing.
They all scare me equally. Fanatical Christians and Jews can be just as bad as fanatical Muslims. Fundamentalism seems to put people on the road to nuttiness no matter what religion it is.