AdvertisementProtesters, Police Still Clashing Over Disputed North Dakota PipelineNovember 03, 2016Jeff BradyfacebookEmail(Top) Gregory Schaffer holds up a mirror to "show the police how they look" while protesting in the Cannonball River. (Left) Protesters wade into the Cannonball River as others (right) pray and hold flags while marching across a wood pedestrian bridge across a creek north of the main protest camp. (Emily Kask for NPR)