Question: What documentary film was released first, Harlan County, USA or Iran?

Context paragraphs:
Iran (is not the problem): Iran (is not the problem) or Iran is not the problem (2008) Iranian documentary film directed, produced and written by Aaron Newman.

I'll Leave This World Loving You: "I'll Leave This World Loving You" is a country music song written by Wayne Kemp and Mack Vickery.  Kemp released it in 1980 on the Mercury Records label.  He had previously recorded the song in 1974 for MCA Records, and used this version as the B-side to his 1974 single "Harlan County".

Battle of Evarts: The Battle of Evarts is the name given to a mining strike and ensuing violence that occurred in Harlan County, Kentucky, in 1931.  In February 1931 The Harlan County Coal Co. cut wages for its employees.  The United Mine Workers union responded by holding a rally in Pineville, drawing over 2,000 attendees.  This and other wage cuts and firings led to a strike, and on May 5 Sheriff Jim Daniels (who was reportedly on the payroll of the Black Mountain Coal Co.) and "three carloads of deputies armed with machine guns, sawed off shotguns and rifles drove into Evarts" to confront the striking miners.  It is unclear who fired first, but after the battle Jim Daniels, two of his deputies and one miner had died.  Eventually Gov. Flem D. Sampson called in the National Guard to stop the strike.  It ended in June after several deaths and arrests.

Kentenia State Forest: Kentenia State Forest is a state forest in Harlan County, Kentucky, United States.  It became Kentucky's first state forest in 1919 when the land was donated to the state by the coal company Kentenia-Cantron.  The land is scattered across seven tracts on the south side of Pine Mountain.

Black Mountain (Kentucky): Black Mountain is the highest mountain peak in the Commonwealth of Kentucky, USA, with a summit elevation of 4145 ft above mean sea level and a top to bottom height of over 2500 ft .  The summit is located at approximately in Harlan County, Kentucky near the Virginia border, just above the towns of Lynch, Kentucky and Appalachia, Virginia.  It is about 500 ft taller than any other mountain in Kentucky.

Darby Mine No. 1 disaster: The Darby Mine No. 1 disaster in Harlan County, Kentucky, USA, on May 20, 2006 killed five miners and left one survivor.

Harlan – In the Shadow of Jew Süss: Harlan – In the Shadow of Jew Süss (German: "Harlan – Im Schatten von Jud Süß") is a 2008 documentary film by German director Felix Moeller about one of the most notorious Nazi German filmmakers, Veit Harlan and his family.  It focuses on the "wildly varying attitudes of Harlan's children and grandchildren", and how they struggle even today with the legacy of their ancestor's work.

Highsplint, Kentucky: Highsplint is a former coal town with an extinct post office in Harlan County, Kentucky, United States.  It was named for the High Splint and Seagraves Coal Companies which operated a mine in the town at that time.  Highsplint's first post office was established on February 7, 1918, with John D. Casey as postmaster, remaining in operation until 1974.

Harlan County, USA: Harlan County, USA is a 1976 Oscar-winning documentary film covering the "Brookside Strike", an effort of 180 coal miners and their wives against the Duke Power Company-owned Eastover Coal Company's Brookside Mine and Prep Plant in Harlan County, southeast Kentucky in 1973.  Directed and produced by Barbara Kopple, who has long been an advocate of workers' rights, "Harlan County, U.S.A." is less ambivalent in its attitude toward unions than her later "American Dream", the account of the Hormel Foods strike in Austin, Minnesota in 1985-86.

The Harlan Daily Enterprise: The Harlan Daily Enterprise, a daily newspaper serving Harlan County, in the U.S. state of Kentucky, with a circulation of 6,000, was first published in 1901 as "The Harlan Enterprise" and began publishing in 1928 as "The Harlan Daily Enterprise".

Supporting paragraphs: Harlan County, USA Iran (is not the problem)
Answer: Harlan County, USA