BISMARCK, ND - The American Civil Liberties Union sent a letter to the Department of Justice Friday calling for an investigation into "possible violations of federal laws and the U.S. Constitution by law enforcement in their responses to those individuals peacefully assembled around the Dakota Access pipeline in North Dakota."
The four page letter describes what the ACLU claims has been a "highly militarized response by law enforcement." It claims protesters bail has been set to high and takes issue with how some protesters have been detained.
The group also compares response to the protests to responses during unrest in Ferguson, Missouri two years ago.
Police have repeatedly denied all of these claims. Lt. Tom Iverson of the North Dakota Highway Patrol told NBC North Dakota News last week law enforcement will protect demonstrators' right to protest if it's done peacefully and lawfully.
The full letter is attached to this story.