Citizenfour

Citizenfour is the only documentary to capture a mass surveillance leak in real time, winning the 2015 Academy Award for Best Documentary Feature after Laura Poitras filmed Edward Snowden's disclosures. The film directly contributed to legislative reforms in five countries, a measurable impact that outperforms #5 Jiro Dreams of Sushi's cultural shift. Created under government surveillance, it achieved a 95% Rotten Tomatoes score—20% higher than the average political documentary—while fundamentally changing public understanding of state surveillance.