Brantford's Lynden Park Mall was filled with dancing and drumming on Friday evening as people from Six Nations participated in a "flash mob" in solidarity with Standing Rock Sioux Nation's fight against the construction of a contentious oil pipeline in North Dakota.

The project is the Dakota Access Pipeline and is intended to transport light sweet crude oil from the Bakken oil field near the Canadian border to Illinois.

Six Nations stands with Standing Rock FLASH MOB!! Lynden Park Mall, Brantford

Posted by Teyotsihstokwáthe Tekarihóken on Friday, November 4, 2016

Indigenous leaders have said the pipeline poses a threat to sacred land and to the water supply they depend on from the Missouri River. Indigenous groups from all over North America have joined them in their protest, and thousands of people are now camping there as the standoff has become more contentious.

Six Nations has been extending support for Standing Rock for months. Six Nations elected chief Ava Hill sent a letter expressing support in August.

"As the most populated First Nation in Canada with more than 26,000 members; Six Nations of the Grand River is honoured to stand with Standing Rock Sioux Tribe in opposition of the Dakota Access Pipeline," the letter states.

And this video was posted in September:

A protest is being planned in Hamilton for Monday morning at 11 a.m. in Gore Park. Thousands of people attended a protest in Toronto on Saturday.