in museums were first employed by artists like Marcel Duchamp, who were looking to challenge both established elite art traditions and the expectations of museum visitors. By the late 20th century, interventions had become a methodology used not only by artists, but also by other groups – including activists, museum visitors, and even museums themselves – as a way to democratize exhibitions, challenge dominant narratives, problematize the provenance of museum objects, and so on. Artist interventions A central aspect of Institutional Critique, some artist’s interventions have been co-organized or commissioned by museums themselves – like Fred Wilson’s Mining the Museum (1992) at the Maryland Historical Society, Michael Nicholl Yahgulanaas’ Meddling in the Museum (2007) at UBC’s Museum of Anthropology, or the Artists' Interventions at the Pitt Rivers Museum in Oxford – while others have been done without explicit permission, like Andrea Fraser’s Museum Highlights (1989) at the Philadelphia Museum of Art. One of the best known artist interventions in a museum is James Luna’s Artifact Piece, which was first performed at the San Diego Museum of Man in 1987, and then again at The Decade Show in New York in 1990. Luna, a Luiseño artist, lay almost naked in a display case filled with artifacts in order to challenge representations of Indigenous peoples in museums and the narratives that accompanied those representations, which suggested that Indigenous people and cultures were dead. The objects in the case included Luna's favorite books and music, his divorce papers, his university degree, photos, and other mementos, alongside labels describing the scars on his body and how he had acquired them. The work was critically acclaimed for its challenge of conventional narratives of Indigeneity and Indigenous experience. A few years later, two artists – Guillermo Gómez-Peña and Coco Fusco – developed a traveling performance art piece called The Couple in the Cage: Two Amerindiens Visit the West that reflected on the treatment and representation of Indigenous peoples in colonial contexts, and was performed in many different spaces, including Covent Gardens, the Walker Art Center, the Smithsonian's National Museum of Natural History, the Australia Museum, and the Field Museum. Activist interventions While there is overlap between artist and activist interventions, specific activist groups such as the Guerrilla Girls have long been creating exhibitions and public advertisements – through the use of billboards, stickers, posters, and projections – to critique power dynamics related to sexism, racism, and