William Golding

Roger stooped, picked up a stone, aimed, and threw it at Henry― threw it to miss. The stone, that token of preposterous time, bounced five yards to Henry's right and fell in the water. Roger gathered a handful of stones and began to throw them. Yet there was a space round Henry, perhaps six yards in diameter, into which he dare not throw. Here, invisible yet strong, was the taboo of the old life. Round the squatting child was the protection of parents and school and policemen and the law. Roger's arm was conditioned by a civilization that knew nothing of him and was in ruins.

she squealed and bucked and the air was full of sweat and noise and blood and terror. Roger ran round the heap, prodding with his spear whenever pigflesh appeared. Jack was on top of the sow, stabbing downward with his knife. Roger found a lodgment for his point and began to push till he was leaning with his whole weight. The spear moved forward inch by inch and the terrified squealing became a highpitched scream. Then Jack found the throat and the hot blood spouted over his hands. The sow collapsed under them and they were heavy and fulfilled upon her. The butterflies still danced, preoccupied in the center of the clearing

Jack held up the head and jammed the soft throat down on the pointed end of the stick which pierced through into the mouth. He stood back and the head hung there, a little blood dribbling down the stick.
Instinctively the boys drew back too; and the forest was very still. They listened, and the loudest noise was the buzzing of flies over the spilled guts