Yes a good one Colin, Lord of the Flies is a good read and the film was certainly a great film as well.
Different people might get different things from it ;
1. Only government makes us civilised. However bad governments can make citizens uncivilised and start war and atrocities ?
2. Only religion makes us civilised. But bad religion also can make its followers uncivilised and start war and atrocities ?
3. Only parents make us civilised. But some good parents can have awful children ?
4. Only an easy life makes us civilised. But many living tough lives have been very civilised ?
Maybe a civilisation just needs all its children feeling that society and family treats them all reasonably fairly, chiefly needing reasonable government, reasonable religion and reasonable parents ?