The passions of football fans are well known and the destructive effects of hooliganism notorious. Researchers at the CSSC have been studying the psychology behind football fandom and exploring ways of channelling cohesion among supporters to support peaceful, law-abiding forms of prosocial action. Our findings suggest that far from social maladjustment causing football violence, social cohesion is at the heart of the trouble, moderated by perceptions of threat. We have also learned that losing has a more powerful and enduring bonding effect on fans than winning, due to the transformative power of these experiences. Putting these and other findings together, our aim is to build interventions that could reduce soccer-related violence and harness cohesion among fans in more positive ways.