There are a lot of documentaries freely available on YouTube.
Sometimes the producers release them for free, but most often other people upload the films and the copyright owners don't bother with taking them down.
xDocumentaries is a central place where you can easily find these documentaries...
A 2016 BBC documentary by British filmmaker Adam Curtis. The film was released on 16 October 2016 on the BBC iPlayer. In the film, Curtis argues that since the 1970s, governments, financiers, and technological utopians have given up on the complex "real world" and built a simple "fake world"...(show more)
A 2014 documentary film about Edward Snowden's leaks that started the 2013 NSA spying scandal. It was directed by Laura Poitras and contains real footage of several meetings Poitras, journalist Glenn Greenwald, and Ewen MacAskill from The Guardian had with Edward Snowden in Hong Kong as he...(show more)
A 1990 American documentary film directed by Jennie Livingston. Filmed in the mid-to-late 1980s, it chronicles the ball culture of New York City and the African-American, Latino, gay, and transgender communities involved in it. Some critics consider the film to be an invaluable documentary...(show more)
A 2003 Canadian documentary film written by University of British Columbia law professor Joel Bakan, and directed by Mark Achbar and Jennifer Abbott. The documentary examines the modern-day corporation. Bakan wrote the book, The Corporation: The Pathological Pursuit of Profit and Power, during...(show more)
A 2008 American documentary film directed by filmmaker Robert Kenner. The Academy Award-nominated film examines corporate farming in the United States, concluding that agribusiness produces food that is unhealthy, in a way that is environmentally harmful and abusive of both animals and employees....(show more)
A 2002 American documentary film written, produced, directed, and narrated by Michael Moore. The film explores what Moore suggests are the primary causes for the Columbine High School massacre on April 20, 1999, and other acts of violence with guns. Moore focuses on the background and environment...(show more)
A 2009 American documentary film directed, written by, and starring Michael Moore. The film centers on the late-2000s financial crisis and the recovery stimulus, while putting forward an indictment of the current economic order in the United States and unfettered capitalism in general.