Question: Which documentary was written first, Gimme Shelter or Bowling for Columbine?

Context paragraphs:
Gimme Shelter: "Gimme Shelter" is the opening track to the 1969 album Let It Bleed by the Rolling Stones.  Although the first word was spelled "Gimmie" on that album, subsequent recordings by the band and other musicians have made "Gimme" the customary spelling.  Greil Marcus, writing in "Rolling Stone" magazine at the time of its release, praised the song, stating that the band has "never done anything better."

Gimme Shelter (1970 film): Gimme Shelter is a 1970 documentary film directed by Albert and David Maysles and Charlotte Zwerin chronicling the last weeks of The Rolling Stones' 1969 US tour which culminated in the disastrous Altamont Free Concert.  The film is named after "Gimme Shelter", the lead track from the group's 1969 album "Let It Bleed".  The film was screened at the 1971 Cannes Film Festival, but was not entered into the main competition.

Bowling for Columbine: Bowling for Columbine is 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 in which the massacre took place and some common public opinions and assumptions about related issues.  The film also looks into the nature of violence in the United States.

Merry Clayton: Merry Clayton (born December 25, 1948) is an American soul and gospel singer and an actress.  She provided a number of backing vocal tracks for major performing artists in the 1960s, most notably in her duet with Mick Jagger on the Rolling Stones song "Gimme Shelter."  Clayton is featured in "20 Feet from Stardom", the Oscar-winning documentary about background singers and their contributions to the music industry.  In 2013, she released "The Best of Merry Clayton", a compilation of her favorite songs.

Baird Bryant: Wenzell Baird Bryant (Columbus, Indiana, December 12, 1927 – Hemet, California, November 13, 2008) was an American filmmaker.  He is best known as the cameraman on the Albert Maysles film "Gimme Shelter" who filmed the fatal stabbing of Rolling Stones concertgoer Meredith Hunter by Hells Angel Alan Passaro at the Altamont Free Concert in December 1969.

Charlotte Zwerin: Charlotte Zwerin grew up in Detroit, Michigan.  She studied at Wayne State University and established a film club there which sparked her interest in documentary filmmaking.  After this, she moved to New York City and found a job with Drew Associates who were the pioneers of direct cinema in the United States.  Here, she met and began to work with Albert and David Maysles.  Zwerin went on to edit and co-direct two of the canonical cinéma vérité documentaries with the Maysles brothers: "Salesman" and "Gimme Shelter."  Zwerin died of lung cancer in January 2004, at the age of 72.

Ronald Krauss (filmmaker): Ronald Krauss is an American film director, producer, and screenwriter.  He directed the films "Puppies for Sale" (1998), "Amexica" (2010), and "Gimme Shelter" (2013).

Gimme Shelter (2013 film): Gimme Shelter is a 2013 American independent drama film written and directed by Ronald Krauss and starring Vanessa Hudgens, James Earl Jones, Rosario Dawson, Stéphanie Szostak, Emily Meade, Ann Dowd, and Brendan Fraser.  It is based on a true story about a runaway teenage girl who gets pregnant and is placed in a home for pregnant girls.

Albert and David Maysles: Albert (November 26, 1926 – March 5, 2015) and his brother David (January 10, 1931 – January 3, 1987) Maysles ( ) were an American documentary filmmaking team known for their work in the direct cinema style.  Their best-known films include "Salesman" (1969), "Gimme Shelter" (1970) and "Grey Gardens" (1976).

Altamont Diary: Alamont Diary is the debut album by Melbourne electronica band Black Cab.  Released in 2004, it is a concept album based on the ill-fated 1969 free concert at Altamont Speedway in California headlined by the Rolling Stones.  The album, whose genre is described a psych-country, features audio samples of former Stones tour manager Sam Cutler, taken from the 1970 documentary film "Gimme Shelter".

Supporting paragraphs: Gimme Shelter (1970 film) Bowling for Columbine
Answer: Gimme Shelter