I will agree with you here that this is a hostile environment and it should be expected a little when going to other teams stadiums. Personally, if I wanted to go to a big game such as this (or any game for that matter) I would definitely not be bringing my little boy until he is of an age where I think he can "talk back" a little so to speak (maybe 14 or 15). Bringing a little girl and a little boy to THE biggest game in the history of your opposition is simply a little stupid to be frank. I still don't condone razing fans with kids, but this guy must have been pretty stupid to put himself in that situation.
It's kind of like someone who puts themselves in ahigh crime area at 1 in the morning and complains about being mugged. No, it wasn't right but you put yourself in that situation.