What disturbing thing do the group of hunters and Ralph do immediately after their encounter with the pig?

After the death of Simon Ralph was filled with remorse, he knew exactly what they had done and said, I quote... "That was Simon" and "That was murder." He also added, "Don't you understand, Piggy? The things that we did---" Piggy tried to lay part of the blame on Simon himself. Piggy as stated, and I quote... "It was an accident" and later "Look, Ralph. we got to forget about this. We can't do no good thinking about it, see?"