In chapter 5, life on the island is quickly falling apart for the boys. The situation is becoming increasingly chaotic. The little ones are more and more afraid of beasts, Jack's tribe continues to hunt with some success, the huts are not being built because the kids would rather play than work, the little ones are not going to the bathroom where they should, and the signal fire was allowed to go out. Ralph has called a meeting. He wants to get the boys to settle down and work together to create a civilized society, but the kids want to vote on whether or not there are ghosts. Piggy sees the ridiculousness of this and he tries to tell the kids so when Jack jumps up and yells at Piggy to shut up. When Ralph tells Jack to let Piggy speak because Piggy has the conch and he tells Jack that he is breaking the rules by speaking out without holding the conch, Jack responds with, "Who cares?" Ralph says the rules are the only things they've got. He's right - it's the rules of a society that make it a society. It's people acting together, showing deference to one another, being civil toward one another that creates a society. Jack doesn't want that; he wants savagery because then he can have control. Jack does not care what the boys do to one another as long as they obey his rules and show deference to him. It's at this point in the novel when the power shifts visibly from Ralph to Jack.
During the meeting when Jack talks out of turn, Ralph gets angry. When Ralph tells Jack to be queit because he didn't have the conch, Jack simply replied who cares.