Garbage, building materials, and months of untreated human waste from thousands of Standing Rock squatters now threatens the very water they claimed to be protecting. After half a year, hundreds of arrests, and thousands of headlines, the protest against the Dakota Access Pipeline has drawn to an end at the Standing Rock site. On February 22, North Dakota Gov. Doug Burgum forced an evacuation of the protestors’ camps. The government needed time to clean the environmental mess the environmentalists left behind. That paradoxical reality underscores many of the problems with efforts that claim to solve potential problems. In the end,...