Indian pipeline dispute

Well, it's the typical problem and injustice. In August it committed other error in USA, the native Americans is protected a reservation (Standing Rock Sioux Reservation), but the officials want a construction a pipeline, it's probably this pipeline create an environmental problems, and the native Americans want to avoid, also the place in where it will be the pipeline is a ancestral lands, but this (officials, rich people, I don't know) people don't understand the problem.