What chance do communities have of getting looted artefacts back, and what lessons do the world's museums need to learn? Stijn Schoonderwoerd and Wayne Modest describe how the Netherlands are trying to decolonise their museums. Maori elders Sir Hirini Moko Mead and judge Layne Harvey led a successful campaign for the return of a sacred tribal meeting house, stolen over a hundred years before - what can others learn from their experience?