Beyond living memory, for some reason we avoid reminding ourselves and our children about the miseries and brutalities of the past. The truth is to be found in ancient graveyards and burial sites, where archeologists have to get used to discovering that a large proportion of all the remains they dig up are those of children. Most will have been killed by starvation or disgusting diseases, but many child skeletons bear the marks of physical violence. Hunter-gatherer societies often had murder rates above 10 percent and children were not spared. In today’s graveyards, child graves are rare.