John Grierson (1898–1972) was a pioneering Scottish filmmaker and producer who shaped the documentary film movement, earning recognition as the father of British and Canadian documentary cinema. He famously coined the term "documentary" in 1926 and championed the idea that film should serve as a tool for social education and reform. As the driving force behind the British documentary movement, he founded the GPO Film Unit, which produced groundbreaking works like Night Mail (1936), and later pla...