Pine Ridge Reservation, also known as the Pine Ridge Agency, covers an area of nearly 3,500 square miles, more than twice the size of the state of Rhode Island. Pine Ridge Reservation has a population ...

Gun violence, drug offenses and sexual violence have become increasingly common on the Pine Ridge reservation, which is more than 2.1 million acres (849,839 hectares) or at least 4% of the state.

FILE – A sign hands outside the entrance to the Pine Ridge Indian Reservation in South Dakota, home to the Oglala Sioux tribe, Sept. 9, 2012.