The Avengers stars have proved themselves heroes in real life after assembling to stand with the people of Standing Rock in protest of the Dakota Access Pipeline.
Marvel stars Samuel L. Jackson, Mark Ruffalo, Chris Evans, and Chris Hemsworth have taken to social media to get their fans to sign a petition against the North Dakota pipeline construction on the Standing Rock Indian Reservation.
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"Tell @POTUS to say #NoDAPL by signing the http://standwithstandingrock.net petition," Evans (Captain America) tweeted.