I agree, movies would really benefit from the ratings being changed. Even if R dropped down to 17 or 16 that would make a huge difference.
The nature of it was pretty disturbing, not graphic.Mags death scene? I'm curious as to how that death came across as particularly violent to you. Sure it was awful D:. But I see no reason why they couldn't put it on screen, I don't remember the poisonous gas causing any sort of bleeding.
I think they do underestimate what children can handle. It's surprising how much of it goes over your head as a child anyway; I find myself crying more as an adult over sad things in movies than I did as a child.And yea, ditto, I've been watching R rated movies since I can remember, which makes me extremely biased when I say I think parents way underestimate what a kid can and can't handle that and a kid's ability to distinguish between what's real and what's fictitious.