Speaker systems may not be allowed at the protest, but the group has found a sound system-free way to get messages across: The human microphone.

As a leader of the Insurgent Peoples’ Revolutionary Army, or ERPI, Gloria Arenas Agis went by the name of Coronel Aurora.In 1999, Arenas was detained by Mexican security forces, tortured and put in prison, where she served over ten years for the crime of rebellion. The Fault Lines team met Arenas at the cafe she now runs in Mexico City, where she share her reflections on organizing in Guerrero's mountain communities, the narco-state, and the trajectory of social movements in Mexico.