The argument in this paper is that action and participatory research developed within the context of social and political movements aimed at promoting democratic relationships and institutions represents a methodological strategy for deconstructing and reconstructing the hegemonic perspective of knowledge and knowledge production. After a brief reflection about the place of social transformation in today's social practice, especially in education, the paper looks at selected traditions of action and participatory research from Europe [England (Tavistock), Scandinavia and Germany] and Latin America (Colombia and Brazil). These experiences, whilst attending to particular social conditions, can be seen as attempts to develop knowledge that promotes and strengthens a shared world view that aims at social justice and recognition of differences.