You are too much.  How has Catholicism as a spirituality done with wiping out vices in it's members?  Sioux do not talk about 'religion'.  They talk about the Creator.  They talk about the responsibility of adults to plan their activities thinking about their children seven generations in the future and not whether their personal soul will be saved at their death.  They understand life is interconnected and they do not stand alone in their own little bubble.  An oil spill into the Missouri at that particular spot would be felt all the way down the Missouri-Mississippi river complex.  That is the water system they are trying to protect.