On October 15, 2014 the Zeta cartel executed the citizen journalist María del Rosario Fuentes Río and posted images of her body to her Twitter account. A medical doctor by day, Fuentes Río had hidden behind the Twitter handle miut3 to contribute real-time updates about narco violence in Reynosa. She had amassed 100,000 followers who used her real-time reporting to avoid turf-war battles. Her Facebook group, Valor por Tamaulipas—a page dedicated to exposing organized crime and impunity—had over 500,000 followers. This talk analyzes the potential of social media to resist what the Sayak Valencia calls the “parallel” narco state. I place biopolitics, necropolitics, and posthuman theory in dialogue to argue that the Zetas had silenced the press to solidify their control of Tamaulipas. They postulated the illicit transport of drugs as a state of exception that cast ordinary citizens as an apolitical zoe. The cartel did not proactively seek out and kill ordinary citizens for no reason, but it identified anyone who interfered with their work as a killable homines sacri. Fuentes Río’s online activism facilitated what I call robo-sacer resistance. She circumvented the Zetas’ control of the media and denaturalized their hegemony by asserting a political voice for herself online. Even her murder has failed to silence opposition to organized crime from anonymous activists. Indeed, Fuentes Río has become a symbol that activists invoke in their calls for an end to drug violence.