Living as I do in the Dark Ages, I hadn't heard of this before I saw it on the forum, but just looked it up and it is billed as a 'young adult' novel. So presumably if the target audience is young adults, by which I understand very late teens, early twenties, they can make their own minds up about seeing children killing each other (haven't seen it and will not see it so don't know...is this really what it's about)? It worries me quite a bit too, if this is what kids have a taste for, but I know I am very old fashioned.
JK Rowling targeted her HP books at 14 year olds apparently , but lots of tinies read them, so perhaps these same tinies are looking for something even more graphic when they become 14.
Agree with the point about child soldiers Miss M...but must stress I haven't seen the film or read the books. It seems nothing is off-limits any more. Sigh.