People in the U.S. of North Dakota are because an oil company is building a multibillion-dollar pipeline under a near their land. The Sioux people have lived on the for thousands of years. The Sioux are Native Americans. They have been joined by protestors. They are all trying to stop the $3.8 pipeline. They say it will dirty their water. They also say the pipeline will damage Sioux sites. A company from Texas, Energy Transfer Partners, owns the 1,885-km pipeline . It is almost .
The protestors call "water protectors". They have been trying to block the pipeline for . They were joined by U.S. military veterans (retired , sailors and members of the air ). The veterans built the protestors to keep warm in the winter. There has been violence between the protestors and police. A North Dakota spokesman said some of the protestors were "". However, a Coast Guard veteran said: "We will be , completely prepared for peaceful protest. We don't even like the 'protest'. We're there to help."