Although burdened by legacies of elitism, exclusion and paternalism, some public museums are attempting to respond to the socio-environmental problems currently facing our planet by developing critical non-formal educational activities to foster consciousness and change. This article explores one such response; a six-week non-formal course entitled Art and Slow Violence hosted at Tate Modern and Tate Britain galleries in London. The course was centred around a variety of artworks and multimedia representations aimed to stimulate dialogue, reflections and meaning making about the social and ecological impacts of the aftermaths of climate change, war and conflict. As a participant researcher, I gathered data through observations, journaling, and interviews. Findings show tensions between learning and education, expert-teacher and novice-learner, audience wants and knowledge assumptions, instructor and organisations expectations and challenges vis-à-vis self-direction around the artworks. Yet the course was powerful, particularly the informal gatherings following each class and the stories the artworks told and represented. Together, these served as means to question critically, reflect, debate and comprehend differently, the complex, contentious, but often 'invisible' socio-environmental challenges of our time.