The project "Youth Participation and Interculturality: Building an Active European Democracy Together," led by the association Une Terre Culturelle (UTC), is rooted in a profound commitment to transforming civic engagement into a lever for empowerment for the youth of Marseille. This initiative stems from an alarming territorial observation: a persistent disconnection between young people from Priority Neighborhoods (QPV) and local or European decision-making bodies. Our goal was to transform this invisibility into active civic engagement through educational mobility and non-formal education. The overall objective and sought-after impact were to strengthen youth participation at both local and European levels, with a specific focus on those currently distanced from traditional participation mechanisms. The project aimed to ensure that every participant became a conscious and equipped stakeholder in democratic life. Our strategic objectives were built around three major pillars: 1. Democratizing civic participation and removing barriers to engagement: We sought to deconstruct the psychological and social barriers that prevent young people with complex life journeys (representing 94% of our audience) from feeling legitimate in the public sphere. The challenge was to transition from "passive citizenship" to "chosen citizenship." By valuing their lived experiences as expertise, we fostered the self-confidence necessary for any form of engagement. 2. Structuring and sustaining a network of "Youth Mobility Ambassadors" (JRM): Beyond a simple series of activities, we aimed to create a group of 22 local leaders capable of peer-emulation. These ambassadors were trained to serve as bridges between their neighborhoods and mobility opportunities. By acting as advocates, they disseminated the values of solidarity and interculturality within their peer circles, thereby multiplying the project's impact far beyond the direct beneficiaries. 3. Institutionalizing a structured and horizontal dialogue: A key objective was to create safe meeting spaces between young people and decision-makers (elected officials, heads of local employment centers – Missions Locales, and specialized prevention actors). This involved co-constructing concrete recommendations for territorial youth policies. This process reduced the symbolic distance between youth and institutions, turning consultation into a tool for genuine social transformation. By mobilizing 431 participations over 12 months, we reached a critical mass that shifted the perspective of institutional partners regarding the youth of Marseille's northern districts. The project validated transversal skills (soft skills) essential for the social inclusion of participants, while promoting European values of tolerance and mutual respect. We also transversally integrated the program’s priorities: Inclusion and Diversity: Through targeted recruitment methods with our partners, ensuring access for all. Participation in Democratic Life: By placing young people at the center of the decision-making process (e.g., choosing advocacy themes). Digital Transformation and Sustainability: By encouraging the use of digital collaborative tools and raising awareness of eco-responsibility during our local meetings. In summary, this project proved that European democracy begins at the doorstep, through the reclamation of public voice and a sense of belonging to a collective project that transcends neighborhood borders. These young people are no longer mere service users, but essential contributors to the construction of a more inclusive society.