This article reflects on how participatory processes inspired by action research hold a genuine potential for developing social educational work in a more democratic way. We present our concept of 'Upturned Participation', which is built upon the methodological framework of Critical Utopian Action Research. First Critical Utopian Action Research is introduced briefly, including a presentation of the core method of the action research approach. We then present an extract from an action research project aimed at creating space for participation for marginalized young people in the area of Copenhagen. On this basis, we reflect on how the ideas of the young people could influence the field of social work. The article addresses contemporary challenges and opportunities for creating development in the field of youth work or social work through participatory processes with marginalized young people.