Are we going back to Western plot?

Rating: 4/10 (19 January 2016)

I was not sure to go and see a movie which everybody says that is violent, but so many nomination, I said it might worth seeing. 1- Acting and performances are really great. 2- Scenery of wilderness are amazing. 3- Plot says that a white man who is a member of missionary/frontier post who lived among the American Indigenous, and has a son, fled with a group of hunters after the the clan massacred by US army. He fled after his wife is killed, but why he did not end up with the remaining clan, and joined a group of hunters? The hunters were attacked by the "Indian" and every detail of killings pictured well. 4- You do not feel any pain that the "Indian" went through. Some of them killed by other tribes, beside being killed by white who some are good people and some are bad people. You do not find any good "Indian", or maybe I missed this part since the scene of violence were so important to be portrayed. 4- Indians in this movies portrayed as , a) Prostitute, b) fighters who just kill. c) some you can feel pity about them. Is there any story of them being human, that even a missionary goes live with them? Is this part you left to be created by your imagination? Why?