At 1.8 billion, today's generation of youth--those ages ten to twenty-four--is the largest the world has ever known. One-third of them live in fragile or conflict-affected countries. Susceptible to the sway of external parties, narratives, and ideologies, they are influenced by their circumstances--enhancing the likelihood of their participating in violent extremism. At the same time, however, evidence suggests that young women and men can and do play active and valuable roles as agents of positive and constructive change. UN Security Council Resolution 2250, issued in December 2015, urges the international community to give youth a greater voice in decision making at local, national, regional, and international levels. In supportive response, USIP established a portfolio that engages youth leaders as critical partners in building peace in Africa, Asia, the Middle East, and Latin America. This report documents the utility and effectiveness of a pilot participatory action research project conducted in 2017 in Kenya as an approach for youth-led peacebuilding in marginalized communities marked by violent extremism.