The photographs of Nan Goldin bear witness to the communities that she's been a part of, providing a loving tribute to those around her and scandalising those who would rather ignore the truths that she presents.

It's work that has been collected by many of the world's great museums.

But more recently, Nan has turned her gaze on those museums, campaigning to have the Sackler name removed from their walls and their collections, because of the family's involvement with Oxycontin and the opioid crisis.

Documentary maker Laura Poitras takes audiences into Nan's campaign, her life and her career in the new film All the Beauty and the Bloodshed.