The Department is a professional law-enforcement agency that serves the people of the Pine Ridge Indian Reservation. Its mission is twofold:
A. The Department helps to prevent outside interests from encroaching upon the sovereign status of the Oglala Sioux Tribe, as guaranteed in treaties, statues, court decisions, Executive Orders, and the Constitution of the United States of America.
B. The Department maintains peace and social order among the people living on the Pine Ridge Indian Reservation. The Department pursues its mission by enforcing tribal and federal law, upholding the Constitution and By-laws of the Oglala Sioux Tribe, and carrying out lawful decisions of the various branches of tribal government, the Tribal Council, the Oglala Sioux Tribal President, and the Oglala Tribal Courts.
It is the Woihanble (Vision) of the Department of Public Safety to come together, with our Oyate (People) to provide safe and healthy Tiospaye's (Extended Families). Guided by our cultural beliefs and traditions, we shall provide professional law enforcement services and protection for all. With respect, dignity and courtesy, we shall be role models for the Oyate (People).