In a world facing multiple intersecting crises, the push for healthier, more resilient societies has never been more urgent. This timely book reveals how empowered and organised communities can lead this change. It offers policy makers, academics, and activists research-driven insights, decolonial perspectives and real-world examples of organising and collective actions from across the global North and South. By centring on the power of community development, participation, and social movements, the book delivers actionable frameworks to tackle inequality and advance the right to health, making it an essential resource for anyone committed to health justice and for building equitable and sustainable health systems worldwide.