The #BlackLivesMatter movement, one of the most influential Black political movements of the post-civil rights era, has been characterized as “more secular” than and antithetical to the Civil Rights movement and “Black church” tradition, which, by contrast, are seen as emblematic of a larger tradition of Black religious protest. Contrary to secularizing reductions and interpretations, I locate a politics of the sacred at the heart of #BlackLivesMatter, which is irreducible to a secular idiom. Centrally, I consider the use of both spiritual and religious language and practices in the movement as a part of “sacred politics.” In what ways, I ask, do language and ideas of the sacred circulate through and inform #BlackLivesMatter? How does the movement’s insistence on the sacredness of Black life serve to collapse any sharp distinction between religious and secular politics? How might we understand #BlackLivesMatter as a part of a larger history of Black religious protest for racial justice rather than defined against it? By listening deeply to activists, my research explores these questions as an opportunity for churches in America to engage questions of racial justice more faithfully as a matter that is central to Christian identity. I analyze the use of rhetorics of the sacred in memoirs and other autobiographical writings, alongside images and other digital artifacts (videos, tweets, etc.) as they circulate on social media (e.g., BlackTwitter, Vine, Instagram, YouTube). By looking for religion in nontraditional institutional and extra-ecclesial formations as it’s embodied in the rhetoric and repertoire of activist practices—on the streets (offline) and in the digital sphere (online)—I contest a secularist repression that misrepresents #BlackLivesMatter and thus fails to recognize fully the critical resources and political potential it mobilizes for justice.