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Looking back on the stand at Standing Rock

Updated 12:56 PM ET, Wed June 21, 2017

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Cannonball, North Dakota (CNN)Full operations are underway on the Dakota Access Pipeline. The 1,872-mile crude oil transport system became a symbol of the fight over American climate policy when members of the Sioux tribe opposed the construction and set up camp at Standing Rock. We look back on the the fight against the pipeline during the coldest months of North Dakota winter.