The history of US treatment of Native Americans meets the definition of genocidal. The US simply didn't quite finish the job in the 19th century. If Native Americans want to protest about an injustice they have the full right to. Uncle Sam owes them big time and reparations have never been paid. This pipeline goes right beside the tiny parcel of land the white man saw fit for them to keep and they don't want any oil spill polluting the water on what little they have left.