Energy Transfer Partners, the company behind the controversial Dakota Access pipeline, is suing Greenpeace, Earth First! and other environmental groups, accusing them of inciting an “eco-terrorism” campaign against the pipeline’s construction. The pipeline’s construction was delayed for months last year after thousands of Native Americans led by the Standing Rock Sioux in North Dakota, and their non-Native allies, launched a nonviolent encampment to stop the pipeline from crossing the Missouri River, saying a spill could contaminate the drinking source for millions.