Clay's group of survivors is a dysfunctional bunch for sure, yet they keep everyone alive and they continually grow in number. Clay rules through intimidation and he is not afraid to kill his own people to make a point, yet he is reasonable when compared to some other members of his leadership group. The most unstable of that bunch, Ronny, is far worse than Clay and has been pushing for the group to move to Jackson for quite a while now. Ronny claims to have knowledge of farms and a stable food supply in Jackson, but of course his real motivation is his desire to get revenge against Sergeant Gibbs for the ass kicking he received in the gunfight back in book two. When Ronny finally manipulates things to convince Clay to move everyone north, they arrive in Jackson only to find that there is no food in the city. This sets up the final showdown between Clay's well armed group of scavengers and the members of the Jackson Commune, a much smaller group of people with barely enough food for themselves.
Commune, Book 4 - the battle for Jackson.