A teenager from a cattle camp near Akot, South Sudan, hair dyed orange with cow urine, stares at me with aggression. The six parallel line scars on the boy's forehead were performed as part of an initiation rite marking the passage of a boy into adulthood and his transition into a Dinka warrior. Courage, aggressiveness, and violence are some of the most important Dinka values and are key to initiation. Slight differences in the direction of the scars and number of scars distinguish the different Dinka clans (Atuot, Aliab, Chiej, Agar, Gok, Rek, Twij, Malual, and Ngok), who often fight amongst each other.