Social media serves as a virtual platform for young people to foster community and amplify marginalized voices, allowing them to actively engage with societal issues and take on roles as activists, advocates, and allies. A 2021 study (McDaniel, 2022) on teens revealed diverse literacy practices employed to address social justice, civil unrest, police brutality, state-sanctioned violence, the global pandemic, and other challenges faced by diverse communities. In a comprehensive three-month multi-case study focusing on the online literacies of teens of Color, the author examined how one youth, Tatum, an 18-year-old Black social justice activist, utilized social media for critical literacy practices and civic engagement. This paper emphasizes Tatum's multiliteracy practices and explores the intersection of justice-oriented activism, social media literacies, and youth identity work. The study advocates for the importance of recognizing youth of Color's multiliteracies and how it enriches teachers' pedagogical practices, providing critical insights for educators.