Chapter 4. Why does Jack attack Piggy? What are the repercussions of the attack?

Ralph admonishes Jack and the hunters for letting the fire go out. Jack, however, is overjoyed by the kill and ignores Ralph. Piggy begins to cry at their lost opportunity, and he also blames Jack. The two argue, and finally Jack punches Piggy in the stomach. Piggy's glasses fly off, and one of the lenses breaks on the rocks.

Piggy was also upset because previous Jack told everyone piggys name when he new piggy was shy and scared about people knowing his name.