Jamie Bartlett is the Director of the Centre for the Analysis of Social Media at the think-tank Demos, where he specialises in online social movements and the impact of technology on society. He is the author of Radicals (2017) about political outsiders and The Dark Net (2014) about internet subcultures. He is also a regular commentator on national and international media outlets and recently presented the two-part BBC documentary series ‘The Secrets of Silicon Valley’.