Several high-powered celebrities have jumped into the mix as tensions escalate at the protest site in North Dakota of a proposed $3.7 billion pipeline.
Police arrested 141 as they forcibly removed demonstrators Thursday evening from the land owned by Texas-based Energy Transfer Partners, which is seeking to complete a 1,200 mile pipeline that will bring oil from North Dakota to Illinois.
Hulk actor Mark Ruffalo recently tweeted a photo of himself standing with one of the protesters, raising a fist in solidarity.
Thor star Chris Hemsworth showed his support for the cause via Instagram, posting a photo of himself standing with the director of the upcoming "Thor: Ragnarok," Taika Waititi.
"Standing with those who are fighting to protect their sacred land and water. #nodapl #waterislife #mniwiconi," Hemsworth wrote in the post.
Ruffalo joked in a tweet that now the demonstrators had "a Hulk and a Thor," on their side.
Shailene Woodley, star of the Divergent series, was arrested with the pipeline protesters this month. Susan Sarandon, Ben Affleck and Leonardo DiCaprio have also spoken out against the pipeline.