"The purpose of the officers’ inquiries into Standing Rock, and scope of the task force’s work, remains unknown. Agency officials declined to comment. But the fact that the officers have even tried to communicate with activists is alarming to free-speech experts who argue that anti-terrorism agents have no business scrutinizing protesters..."
"`The idea that the government would attempt to construe this indigenous-led non-violent movement into some kind of domestic terrorism investigation is unfathomable to me,` said Lauren Regan, a civil rights attorney who has provided legal support to demonstrators who were contacted by representatives of the FBI. "`It’s outrageous, it’s unwarranted … and it’s unconstitutional`..."
"The three individuals, who include a Native American and a non-indigenous activist, asserted their fifth amendment rights and did not respond to the officers, according to Regan, who declined to identify them to protect their privacy and out of fear of retribution..."
"Two of them were contacted in North Dakota and a third at their home outside the state, according to Regan. She said all three contacts were made in recent weeks after Trump’s inauguration."
"Trump, a former investor in Energy Transfer Partners, the Texas-based firm behind the pipeline, took executive action in his first week in office to expedite the project. On Wednesday, workers began drilling to complete the pipeline across the Missouri river."
Read more https://www.theguardian.com/us-news/2017/feb/08/standing-rock-dakota-access-pipeline-last-stand