Standing Rock Sioux Tribe urges calm as National Guard called in before pipeline ruling

The leader of the Standing Rock Sioux Tribe in North Dakota is urging calm ahead of a highly anticipated court ruling that could halt work on the contentious Dakota Access pipeline project.

Thousands have gathered in and around the reservation to support the tribe's fight against the pipeline, which many fear could leak and contaminate the Missouri River. The tribe was successful in getting a temporary work halt on portions of the pipeline earlier this week.

But the temporary work stop came only after a violent confrontation over the weekend between people from the camp and private security guards armed with dogs and pepper spray.

http://www.cbc.ca/news/aboriginal/standing-rock-urging-calm-1.3754009