"Nuestra tierra" is Lucrecia Martel's directorial debut in the documentary genre, focusing on the tragic assassination of Javier Chocobar, the chief of an indigenous community in the Tucumán province of Argentina. This film intertwines historical investigation with personal narratives, highlighting the extensive effects of this crime on the community of Chuschagasta, where the tragedy unfolded. Martel collaborates with the community, using their voices to recount the implications that Chocobar's death had on their lives and culture, illustrating how such violence can reverberate through generations.

The documentary not only narrates the events surrounding the murder but also delves into the broader issues of indigenous rights and social justice in Argentina. By featuring real community members, the film aims to provide a platform for their stories, shedding light on their struggles and resilience in the face of adversity. The use of personal testimonies combined with historical context serves to create a poignant narrative that resonates with audiences, emphasizing the ongoing challenges faced by indigenous peoples in the region.

Overall, "Nuestra tierra" aims to be both a tribute to Chocobar and a critical exploration of the systemic issues that affect indigenous communities. With its artistic storytelling and a commitment to highlighting the voices of the marginalized, Martel's documentary seeks to initiate conversations about justice, recognition, and the need for societal change, making it a significant cultural piece that transcends mere cinematography to become a tool for advocacy and awareness.