This work investigates the complex social stratification and political organization of the Murle people in South Sudan, specifically examining the distinction between the ruling 'red' chiefs and the 'black' commoners. Bazett A. Lewis, an anthropologist with extensive field experience, utilizes primary ethnographic data collected during his time among the Murle. He presents a structural analysis of how lineage, status, and political authority are negotiated within this pastoralist society. The text argues that these social divisions are not merely symbolic but are deeply embedded in the economic and ritual life of the community.

Experts in African anthropology recognize this monograph as a foundational text for understanding the social dynamics of the Murle people. Readers frequently note the academic density of the prose, which is characteristic of the Oxford Monographs on Social Anthropology series.