Sorry but you are wrong.  The majority of the protesters are anti oil they have made it clear that their real goal is to stop oil production in North Dakota.  The route is NOT on native land it is on Army Corps of Engineers land, it is about a mile from Standing Rock reservation.  The rout also follows the same route of a natural gas pipe line.  If there were any sites on that route unfortunately they would have already been disturbed and destroyed when the natural gas pipe line was built.   The oil which is now being trucked out and taken by rail is being transported in a much more dangerous way that if it is shipped through this pipe line.  The protesters have crossed the line from protesters to criminals by trespass,  vandalism and assault of security officers.  I did support  the protesters until  they made themselves into criminals with their actions.