This time last year, tensions were at an all-time high at the anti-Dakota Access Pipeline camps near the Standing Rock reservation in North Dakota. Private security officials had turned guard dogs on protesters, police used water hoses on crowds as temperatures dropped, and protesters and police clashed almost daily. The effort to stop the pipeline construction ultimately failed. But many activists say the movement galvanized a new generation of organizers for environmental justice. A year after a crucial time at Standing Rock, we’ll talk with people about their experiences and the lessons they learned in retrospect. What messages from Standing Rock stay with you?