Martinez, RodThe following dissertation examines a group of community workers known as credible messengers in Washington, D.C. Credible messengers have lived experience surviving carceral systems such as prisons and environments and have transformed their lives to guide, relate to, and support others who share their backgrounds. Their credibility stems directly from their intimate knowledge of the communities they serve. This dissertation project draws on qualitative interviews with male credible messengers from a more considerable multi-year evaluation of a newly implemented credible messenger program housed in a youth agency. Sociologically, the project explores Black carceral masculinities and mentoring as civic engagement. The findings reveal how men resist and challenge prevailing notions around hegemonic and carceral masculinities through their racially gendered experiences, which shape how they approach their work with youth. The study also suggests that the men engage in credible messenger work for motivations other than redemption and in service of a larger mission to Black youth and their local communities. The dissertation project also includes a conversation with a formerly incarcerated public figure from Washington, D.C., as a call to action to researchers and others to uplift the experience of impacted people and communities. The dissertation project concludes with a set of recommendations aimed at policy and practice as it relates to criminalized Black men and boys.enDissertationSociologyCriminologyAfrican American studiesBlack MasculinityBlack MenCommunity EngagementCommunity SafetyCredible MessengersMentoring