In this third Unions21 bite-size masterclass podcast, we range from Martin Luther King to Fortnite, exploring how social movements and gaming technologies can be best harnessed in support of labour movement organising and education. Dr Peter Bloom, from the Open University Business Schooltakes us across the “mobile divide” and explains why it is so important. There is expert analysis from Becky Wright, SPERI’s Tom Hunt, and yours truly. We welcome the support of the University of Sheffield’s Political Economy Research Institute, known as SPERI, and Beyond Trafficking and Slavery on openDemocracy. (Beyond Trafficking and Slavery is non-profit project combining clear writing with rigourous scholarship to help everyone better understand exploitation in the world of work. Find out more at opendemocracy.net/beyondslavery.) Music courtesy of Podsummit.com. Photogrpah ãthe Open University. A Makes-you-Thinkproduction.