A young woman who had been arrested during protests against a natural gas pipeline in southwest Boston may lose an arm from wounds sustained during civil disobedience in North Dakota. Sophia Wilansky, 22, of New York, suffered grievous injury on Sunday in the ongoing confrontation near a Sioux reservation between "water protectors" and law enforcement officers. Opponents of the Dakota Access Pipeline say the route - which goes under the Missouri River - threatens the water supply and sites sacred to the Standing Rock Sioux. Both sides blame the other for Wilansky's injuries, as reported by The Guardian. Protesters say a concussion grenade fired by police is to blame.