Worshipers of this ethnicity were killed in the capital of Unity state in the Bentiu massacre.
An army led by a member of this ethnic group was formed by a meeting in Bilpam, which is the name given to the headquarters of that army. A "white army" helped participate in a massacre of this ethnic group at Bor. This group's traditional spiritual leaders are the "masters of the  shing spear," who sacri ce their long-horned cows to their lone god, Nhialac. Worshipers of this ethnicity were killed in the capital of Unity state in the Bentiu massacre. A current President of this ethnic group o ten wears a black Stetson cowboy hat because he really liked one that George W. Bush had given to him in 2006. A member of this ethnic group named John Garang led the SPLA. This ethnic group o ten oppressed the Nuer and is the plurality in a country with the capital at Juba. For 10 points, name this ethnic group led by Salva Kiir that is the largest in South Sudan.
An army led by a member of this ethnic group was formed by a meeting in Bilpam, which is the name given to the headquarters of that army.
Dinka people [or Jieng]