really? this is how you are going to make your argument? by making ad hominem attacks?
In reality, a lot of people aren't very well educated on this issue. Protesters aren't always right.
First, the land isn't owned by the tribe. Second, the pipeline is a net gain for the environment (the crude oil will be transported regardless - current methods are train & truck). Modern pipelines are safer than any of these techniques. Third, the Army Corp of Engineers put a lot of time and effort into choosing this route. They didn't just plop down a pipeline and see where it lands. They made countless accommodations for local tribes and even attempted to appease this tribe by choosing the current route.
This being said, it doesn't discount the actions of the police and the response to the protestors. It has been despicable and produced needless violence. The protestors are not scott-free either. The whole situation is volatile.
Ultimately, I think the pipeline should be placed. Too many people don't completely understand the topic or pipelines in general.
Here is a link to the court documents I am referencing.