Watching for 3 hours last night, I was horrified. These are unarmed people. Forceful action is not needed nor required. Here's another article that shows a map of the affected area: https://www.washingtonpost.com/national/showdown-over-oil-pipeline-becomes-a-national-movement-for-native-americans/2016/09/06/ea0cb042-7167-11e6-8533-6b0b0ded0253_story.html