The Canary Effect examines United States policy toward Native American nations from first contact through the reservation system, boarding schools, and present-day poverty, arguing that the historical record meets the legal definition of genocide. Historians, activists, and tribal members appear on camera alongside archival photographs, government documents, and footage from reservations including Pine Ridge, tracing forced removals, massacres like Wounded Knee, and the federal boarding school system that separated children from their families and languages. The film lays out statistics on poverty, suicide, and life expectancy on reservations today and connects them directly to the policies documented earlier, treating current conditions as the continuation of a deliberate history rather than a separate problem. Interviewees include scholars of Native American history and legal experts who walk through the UN definition of genocide alongside the American record point by point. The tone is unambiguously an indictment, built to make the case rather than present a balanced debate, and it uses first-person testimony from Native subjects throughout to keep the argument grounded in specific lives rather than abstractions.