What metaphors are used in Black Hawk Down: A Story of Modern War by Mark Bowden?

Clans become a metaphor for division in Somalia. Much of Somalia is divided into specific clans, or tribes. Each clan has its own set of leaders. It is this division that has caused civil unrest in the country and caused the civil wars that brought the attention of the UN and American forces. Warlord Aidid was a leader of one of these Clans, Haber Gidr, and his desire for control over the other clans as well as his own is what led to him becoming a target of American forces.