Question: Tower is a 2016 animated documentary film directed by Keith Maitland about the 1966 shootings at the University of Texas at Austin, by who?

full_context: Document 1: Almost Sunrise: Almost Sunrise is a 2016 American documentary film directed by Michael Collins. It recounts the story of two Iraq veterans, Tom Voss and Anthony Anderson, who, in an attempt to put their combat experience behind them, embark on a 2,700-mile trek on foot across America. It made its world premiere on the opening night of the Telluride Mountainfilm Festival on 27 May, 2016.
Document 2: Tower (2016 film): Tower is a 2016 animated documentary film directed by Keith Maitland about the 1966 shootings at the University of Texas at Austin. The film is 82 minutes long, reduced from 92 minutes after the SXSW screening and premiered at the 2016 South by Southwest.
Document 3: 2009 Fort Hood shooting: On November 5, 2009, a mass shooting took place at Fort Hood, near Killeen, Texas. Nidal Hasan, a U.S. Army major and psychiatrist, fatally shot 13 people and injured more than 30 others. The shooting was the worst mass shooting on an American military base.
Document 4: Virginia Tech shooting: The Virginia Tech shooting, also known as the Virginia Tech massacre, occurred on April 16, 2007, on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Virginia, United States. Seung-Hui Cho, a senior at Virginia Tech, shot and killed 32 people and wounded 17 others in two separate attacks (another six people were injured escaping from classroom windows), approximately two hours apart, before committing suicide.
Document 5: 2016 Minneapolis shooting: The 2016 Minneapolis shooting took place on June 29, 2016 in Minneapolis, Minnesota when a man named Anthony Sawina shot at five Somali-Americans, wounding two of them. Witnesses later recounted that Sawina shouted anti-Muslim expletives and claimed he was "going to kill [them] all." The attack was condemned by civil rights groups as part of a larger rise of Islamophobia in the United States leading up the 2016 presidential election.
Document 6: Amanda Knox (film): Amanda Knox is a 2016 American documentary film about Amanda Knox, twice convicted and later acquitted of the 2007 murder of Meredith Kercher, directed by Rod Blackhurst and Brian McGinn. It premiered at the Toronto International Film Festival on September 10, 2016 and on Netflix on September 30, 2016.
Document 7: The Wild Bunch: An Album in Montage: The Wild Bunch: An Album in Montage is a 1996 American short documentary film directed and edited by Paul Seydor. The occasion for the creation of this documentary was the discovery of 72 minutes of silent black-and-white 16 mm film footage of Sam Peckinpah and company on location in northern Mexico during the filming of "The Wild Bunch". Todd McCarthy described it as, "A unique and thoroughly unexpected document about the making of one of modern cinema's key works, this short docu will be a source of fascination to film buffs in general and Sam Peckinpah fanatics in particular." Michael Sragow wrote that the film is "a wonderful introduction to Peckinpah’s radically detailed historical film about American outlaws in revolutionary Mexico — a masterpiece that’s part bullet-driven ballet, part requiem for Old West friendship and part existential explosion. Seydor’s movie is also a poetic flight on the myriad possibilities of movie directing." Seydor and Redman were nominated for the Academy Award for Best Documentary (Short Subject).
Document 8: Empire (1964 film): Empire is a 1964 American black and white silent film written, produced, and directed by Andy Warhol. It consists of eight hours and five minutes of continuous slow motion footage of the Empire State Building in New York City. Abridged showings of the film were never allowed, and supposedly the unwatchability of the film was an important part of the reason the film was created. However, a legitimate Italian VHS produced in association with the Andy Warhol Museum in 2000 contains only an extract of 60 minutes. Its use of the long take "in extremis" is an extension of Warhol's earlier work the previous year with "Sleep". Warhol employed Rob Trains to be the projectionist for a screening of the film. Trains miscalculated and mixed the order and speed of the reels for the eight-hour movie. After a positive review in "The New York Times", Warhol actually liked the "mistake" and employed Trains for the entire summer.
Document 9: Killswitch (film): Killswitch is a documentary film about the battle for control over the Internet. The movie is a collaboration between director Ali Akbarzadeh, producer Jeffrey Horn, writer Christopher Dollar and Akorn Entertainment. It premiered at the Woodstock Film Festival in October 2014, where it won the James K. Lyons Award for Best Editing of a feature documentary and then made its international debut, playing alongside "Citizenfour" at the International Documentary Film Festival Amsterdam in November 2014. In 2015, it screened on Capitol Hill, as well as film festivals on four continents (Europe, Asia, Australia, and North America). The tech world has been excited by democratic presidential candidate Lawrence Lessig's role in the film. Kathy Gill of GeekWire writes that ""Killswitch" is much more than a dry recitation of technical history. Director Ali Akbarzadeh, producer Jeff Horn, and writer Christopher Dollar created a human centered story. A large part of that connection comes from Lessig and his relationship with Swartz." Since Killswitch's recent release to a popular audience on Netflix, critics have hailed the film as one of the best documentary films to watch in 2017.
Document 10: University of Texas at Austin: The University of Texas at Austin (UT, UT Austin, or Texas) is a public research university and the flagship institution of the University of Texas System. Founded in 1881 as "The University of Texas," its campus is located in Austin, Texas, approximately 1 mile (1.6 km) from the Texas State Capitol. UT Austin was inducted into the Association of American Universities in 1929, becoming only the third university in the American South to be elected. The institution has the nation's eighth-largest single-campus enrollment, with over 50,000 undergraduate and graduate students and over 24,000 faculty and staff.
Document 11: The Delicate Art of the Rifle: The Delicate Art of the Rifle is a 1996 independent film directed by Dante W. Harper, with a screenplay by Stephen Grant, based on his short story by the same name. It is a surrealistic comedy-drama about a school shooting as seen through the eyes of a socially awkward college student named Jay. Walt Whitman, the shooter, is loosely based on Charles Whitman, but the film is not in any way a factual account of the 1966 shootings at the University of Texas.
Document 12: University of Texas tower shooting: On August 1, 1966, Charles Whitman, a former Marine sharpshooter, took rifles and other weapons to the observation deck atop the Main Building tower at The University of Texas at Austin, then opened fire on persons indiscriminately on the surrounding campus and streets.
Document 13: 2012 College Station, Texas shooting: On August 13, 2012, a shooting occurred in College Station, Texas near Texas A&M University around 12:30 p.m. central time, in which multiple people, mostly police officers, were shot in a shootout. The suspect, who was shot and fatally wounded in the gunfight, was later identified as 35-year-old Thomas Alton Caffall III. Police found a Vz 58 Tactical Sporter rifle, a Mosin–Nagant M91/30 rifle with a bayonet, a .40-caliber SIG Sauer P226 pistol stolen from a police officer, and a PSL rifle with a scope in his house after the shooting.
Document 14: Tyler courthouse shooting: On February 24, 2005, a man shot his wife and son outside the courthouse in Tyler, Texas, then engaged police and court officers in a shootout. David Hernandez Arroyo, Sr. opened fire in front of the courthouse with a semi-automatic AK-47 rifle, killing his ex-wife, and wounding his son. A downtown resident, Mark Alan Wilson, attempted to intervene but was shot dead. Arroyo was fatally shot by police after a high-speed pursuit.
Document 15: Luby's shooting: The Luby's shooting, also known as the Luby's massacre, was a mass shooting that took place on October 16, 1991, at a Luby's restaurant in Killeen, Texas, United States. The perpetrator, George Hennard, drove his pickup truck through the front window of the restaurant, and immediately shot and killed 23 people, and wounded 27 others before fatally shooting himself. It is the fourth deadliest massacre by a single shooter in U.S. history.
ground_truth: Charles Whitman