Whose land is this?

The largest gathering of Native American tribes in memory is happening in North Dakota at the site where a planned $3.8 billion oil pipeline would cross treaty land seized from the Standing Rock Sioux Nation decades ago. The Native Americans say the pipeline would not only violate land that is sacred to the Lakota people, but also pose a threat to the reservation’s own water resources. The U.S. government has called a temporary halt to the project, but the Native Americans still pledge to put themselves in the way of any future construction there.