More importantly, ND State Troopers are outside their jurisdiction the minute they crossed onto the Rez. Indian Reservations are sovereign entities with equal standing to the states relative to the Federal Government. Only tribal and Federal agents have any jurisdiction there. It's as if ND State Police went to Wyoming to make sure a pipeline was built across Yellowstone.
This is just yet another broken treaty, yet another white seizure of NDN land. It's an act of war by a foreign power, but also it's an excuse to decapitate another generation of Indians. Adolf would be proud of the perpetual genocide, but then, the US treatment of Native Americans is precisely the thing that gave old Adolf the idea for the Shoah.
Survival is resistance.