An excellent movie, based on a disturbing but quite stunning book.
Quite a few years ago, I read an interview (must try to find the source) with the director of the movie, who suggested that if adults had not been present that the 'method acting' of the movie might have taken an even more sinister turn. Apparently, it was intimated to the youngster who played 'Piggy' (the wise, intellectual outsider who advised 'Ralph', the original 'heroic leader' of the kids before he was overthrown by the ambitious and focussed 'Jack' and his cherubic choir), that the scene of his murder might be staged 'for real'.
Certainly, when the book was first published it caused a sensation and was incredibly controversial, indeed, something approximating to a profound shock, offering, as it did, an alternative - and very subversive - vision of unsupervised childhood which sort of served to upend the ideal (found in Richmal Compton's books, as well as Enid Blyton's among countless others) that children could run their own lives in an egalitarian and civilised harmony if permitted to do so.
Worse still, was the fact that William Golding had chosen to write about British upper-middle class public school educated children - the sort of children from whom the 'cream of society' tended to be drawn, and indeed, the sort of children who had been afforded every possible advantage offered by their society at that time - and proceeded to show the disintegration of their shipwrecked society in the bleakest of terms, at a time when received wisdom was that such youngsters would instead, choose, to uphold the values with which they had been instilled since early childhood, if such conditions befell them.
As is clear from his book, Golding's view of human nature was quite bleak.