In Chapter Eight of Lord of the Flies, Jack calls a meeting by blowing the conch and insists that the threat of the monster is real. Jack believes that Ralph is a coward who is incapable of handling the situation and calls for him to be removed from his position of leadership. The boys are unwilling to vote Ralph out of power, which causes Jack to storm off in a huff, assuring the group that those who wish to follow him are welcome to do so.
The result is a divided population, with some boys joining Jack on the beach to violently hunt down and kill a sow, whose head they offer up on a stake as a sacrifice to the beast. Jack's tribe then raids the old tribe's grounds and invites them to a feast and, once again, to join the new tribe. At this point, with the boys hungry and scared, Ralph has pretty much been stripped of all power.
In chapter eight, Jack calls a meeting for the boys to reconvene after discovering the beast still lurking on the mountain side. His main goal in calling the meeting is to discredit Ralph publicly, insisting in front of all the other boys that Ralph believes the hunters to be cowards. Jack calls for the other boys to vote on getting rid of Ralph as chief, but none of the other boys are willing to speak up openly against Ralph's leadership. Jack petulantly storms away from the meeting, claiming: "I'm not going to play any longer. Not with you" (127). The meeting ends horribly with a divisive rift between Jack and Ralph, splitting the once-unified tribe of boys into factions.