Kaitlyn > Status Update

He toys with how isolating small groups does the same thing.
Under the Dome: Town isolated from the rest of the world tears itself apart.
Storm of the Century: Town isolated by a blizzard tears itself apart and sacrifices a child.
Needful Things: Gaunt's pranks don't just escalate violence, but drive people away from each other.
The Stand: Isolated towns of survivors go to war.