'It's cultural genocide': inside the fight to stop a pipeline on tribal lands

The Line 3 route traverses land that Native American pipeline opponents say is protected by US treaties with Ojibwe nations

Dressed in a ribbon skirt and mask, Tara Houska gazed down at the trickling waters of the Mississippi near its headwaters. The great American river that eventually flows into the Gulf of Mexico is just a stream in these parts of northern Minnesota.

A pipeline will soon burrow underneath this part of the Mississippi and its surrounding wetlands. It is one of hundreds of water crossings, including wild rice fields, that lie in the path of a new stretch of Line 3, a pipeline bringing nearly 1m barrels of tar sands a day from Alberta, Canada, to Superior, Wisconsin.