Humanity basically dies

 Simon passes out and wakes up. He explores, discovers the truth about the beast, and heads immediately to the beach to tell the others. Meanwhile, all the boys have left the original camp to join Jack's hunters. Even Ralph and Piggy go. There's a dispute. It rains. Jack and his hunters begin their chant. Simon appears from the forest. They kill him. The dead parachutist is driven by the wind, over the boys, and out to sea. After the storm ceases, the boys gather around dead Simon as his body is washed out to sea. I think it is horrible that Simon died but since he was a symbol a good it was a sign that the savage and the evil in them has taken over and they killed the good they had left in them.