The study of causal link between youth bulge and of socio-political instability, including war, terrorism and violent protests with conspicuous involvement of bulges of young people, has been subject of contemporary debates in academic and policymaking spheres, in developed countries. Although contemporary, this debate has been overlooked in academic and policymaking spheres of developing countries, where youth bulge has, long ago, become unmanageable and socio-political violence is constantly an imminent threat affecting rural, but especially urban areas. In this context, this research addresses the causal link between youth bulge and socio-political violence in Mozambique, which has been absolutely overlooked, for instance, in the rare literature on the three violent protests that affected significantly the cities of Maputo and Matola, in Mozambique, in 1993, 2008 and 2010. This is, in the first place, an attempt to fill the gap and analyse critically the merits and demerits of the theoretically suggested causal link between youth bulge and socio-political violence, particularly violent protests, which became popular through the so called “Arab Spring”. Thus, drawn on youth bulge theory, qualitative-driven approach to mixed methods, historical and contextual nuances as well as secondary sources, this research concludes that the demographic factor played influential role on the outbreak of the three protests of Maputo and Matola. This conclusion goes against traditional and predominant explanations that focus on the macro-level of analyses that blame governments for wrongdoings and neglect the micro-level of analyses in which lies the responsibility of extended families for the outbreak of socio-political instability. Yet, the demographic factor was conveniently minimized in the narratives of both belligerents, namely successive Frelimo-led governments and bulges of (young) protestors who were at the forefront of the three violent protests. Although important, youth bulge theory, alone, cannot explain the causes of the three violent protests that affected dramatically Maputo and Matola. Historical and contextual nuances