Clayton Thomas-Müller, a member of the Treaty #6 Mathias Colomb Cree Nation (aka Pukatawagan) in Northern Manitoba, Canada, is a Winnipeg-based, award winning Indigenous and human rights and climate activist who has campaigned across North America organizing in hundreds of First Nation and Native American communities to defend their territories against the encroachment of the fossil fuel industry with a special focus on stopping the expansion of the Canadian tar sands and its associated pipelines. Clayton is also an award-winning film director, media producer, and bestselling author. His book, Life in the City of Dirty Water, was a national bestseller and a CBC Canada Reads finalist.