April 2016:

Tribal members began protesting the 1,172-mile, four state, Dakota Access Pipeline construction by setting up camp along the banks of Lake Oahe in North Dakota.

August 2016:

The Standing Rock Sioux Tribe filed suit in federal district court in Washington, D.C., against the U.S. Army Corps of Engineers, which is the primary federal agency that granted permits needed for construction of the pipeline. Background here — Sacred tribal sites still in danger from DAPL by Earthquake Weather

September 2016:

The small Sacred Stone Camp grows supporters there by the thousands with 280 tribes represented.

National attention grows from the next two events.

—The Dakota Access Pipeline guards unleash attack dogs on our American Indian water protectors by navajo (23,515 Facebook shares)

—North Dakota activates National Guard to protect the pipeline instead of our tribes by navajo (40,061 Facebook shares)

—The Vicious Dogs of Manifest Destiny Resurface in North Dakota​ by Jacqueline Keeler

—North Dakota v. Amy Goodman: Arrest Warrant Issued After Pipeline Coverage

It was also reported that members of Red Warrior camp have been arrested and that law enforcement check points are photographing people, perhaps to make mass arrests later. Activists are urged to avoid the check points.

Federal court denies the Standing Rock Tribe’s request for injunction. However, a joint statement from the Department of Justice, the Department of the Army, and the Department of the Interior asked for construction to voluntarily be ceased on federally controlled lands.

—Standing Rock Sioux Tribe’s request to stop Dakota Access Pipeline denied, Dept. of Justice steps in by navajo

—Partial Victory for Standing Rock Sioux by EarthquakeWeather

Sacred Stone Camp is feeling this: Erased By False Victory: Obama Hasn’t Stopped DAPL

A detailed analysis provided by attorney Robin Martinez — who is coordinating legal advice and representation for protesters at the North Dakota camps: What You May Not Know About the Dakota Access Pipeline

Sept. 13 — 22 Water Protectors are arrested and jailed without bond after locking themselves to construction machinery.

—North Dakota’s Governor Declared a State of Emergency to Deal With Peaceful Oil Pipeline Protesters. We Call It a State of Emergency for Civil Rights by Jennifer Cook, Policy Director, ACLU of North Dakota

Sept. 14 — Morton County Sheriff pursues felony charges on those arrested. 23 people and their charges are named. As of 9/14 a total of 69 individuals have been arrested for illegal protest activities.

—Judge drops injunction against tribal leaders allowing them to protest lawfully

—Cherokee give $50,000 to oppose North Dakota pipeline

Sept. 16 — U.S. Army Corps of Engineers grants Special Use Permit to Standing Rock Sioux Tribe to use Federal lands managed by the Corps near Lake Oahe for gathering to engage in a lawful free speech demonstration.

—Appeals court halts Dakota Access Pipeline work pending hearing that will give the court more time to consider the tribes' request for an injunction.