Researchers have now documented at least 25 protest movements worldwide in which people aged roughly 14-29 have played a central role. The geography spans Bangladesh, Serbia, Brazil, India, France, Spain, Germany, Morocco, Mexico, and the United States. The triggers vary — quota laws, corruption, housing costs, education funding, climate inaction — but the underlying diagnosis is remarkably consistent: the social contract that once promised upward mobility in exchange for participation has fractured. The most dramatic outcomes have been regime-level. In Bangladesh in 2024, student protests that began over a quota law escalated into what was described as the world's first successful gen Z-led revolution, forcing Prime Minister Sheikh Hasina to resign and flee by helicopter. In Serbia late last month, a student movement ended Aleksandar Vučić's party's 14 years in power via elections. In Brazil, youth mobilisation — amplified through a WhatsApp channel called 'Lula's Army' that attracted millions — helped swing the presidential runoff to Lula da Silva. What distinguishes this wave from predecessors like the Arab Spring is the mobilisation infrastructure. TikTok and X amplify grievances at speed; Discord servers and group chats enable decentralised planning that is harder to decapitate; VPNs and mirrored content circumvent internet shutdowns. The combination lowers the coordination cost of mass action dramatically. In the US, Zohran Mamdani's New York mayoral campaign fielded roughly 50,000 volunteers, many of them young, blending social media savvy with in-person community building. Europe's latest wave illustrates the breadth. French school students demanded better conditions; Spanish youth pitched tents over housing affordability; a German movement called 'Gen Z regelt!' rallied thousands over cost of living, education, and climate. Arancha González, dean of the Paris School of International Affairs, identified the common thread: 'The idea that economies generate wellbeing and social equality has been shattered.' The state response has been consistently heavy-handed. In Bangladesh, UN human rights experts documented as many as 1,400 people killed, mostly by security forces, with thousands more suffering severe injuries. In India's Cockroach movement, authorities detained thousands, deployed teargas, beat protesters with lathis, barricaded roads in Delhi, and shut down internet and public transport. In Morocco, more than 2,000 people were charged and many received harsh prison sentences after the Gen Z-212 movement. Research suggests youth-led protests are met with higher levels of repression despite being no more likely to use violence than other movements. In the US, the pro-Palestine campus movement produced thousands of arrests, expulsions, and suspensions, along with new anti-protest policies. But the organising infrastructure persists: students at a historically Black university in North Carolina marched to polls after being denied a polling site, and the Cornell 7 case has triggered class boycotts and occupations nationwide. Harvard political scientist Erica Chenoweth frames this as the potential beginning of a 'profound generational transformation.' Gen Z accounts for roughly a third of the world's population. Their grievances — corruption, housing, education, climate, democratic erosion — are not boutique concerns but structural failures of governance. The question is whether political systems absorb the pressure through reform or harden against it through repression, a choice that will shape institutional legitimacy for decades.