September Dawn is a 2007 film by Christopher Cain, released on August 24, 2007. It sets a fictional love story against a pseudo-historical version of an actual tragedy of the Mountain Meadows massacre of September 11, 1857, when a wagon train of emigrants was attacked by a small group of Mormon militiamen and members of the Paiute tribe; more than 120 men, women, and children were killed.

The movie stars Jon Voight as Jacob Samuelson, Terence Stamp as Brigham Young, and Jon Gries as John D. Lee.

The fictional love story between Emily Hudson (Tamara Hope), the daughter of the wagon train's pastor, and Jonathan Samuelson (Trent Ford), the son of the local Mormon bishop, plays out against the build-up to the massacre and the tragedy itself.

Director Christopher Cain was prompted to make September Dawn because of his opinion that religious extremism is particularly relevant today. Cain drew on historical records of the massacre, excerpts from speeches by Brigham Young, and the signed confession of John D. Lee, who led the attack. The film is controversial, representing the view that Brigham Young had a direct role in the massacre, while the LDS Church maintains that "[t]he weight of historical evidence shows that Brigham Young did not authorize the massacre". Officially, the LDS Church "is not commenting about this particular depiction" of the massacre but has published an article marking 150 years since the tragedy occurred.

Screenplay writer Carole Whang Schutter said: "Creating likeable characters that take part in unimaginably atrocious acts is a chilling reminder that terrorists can be anyone who chooses to blindly follow fanatical, charismatic leaders.[...] Our fight is not against certain religions [but...] 'powers of darkness' which are prejudice, hate, ignorance, and fear perpetuated by leaders who history will surely judge by their deeds." Schutter claims that she was inspired by God to write the story. "I got this crazy idea to write a story about a pioneer woman going in a wagon train to the California gold rush, and the train gets attacked by Mormons dressed as Indians [...] The idea wouldn't leave me. I believe it was from God." She also states that she finds the coincidental date of the massacre - September 11 - to be "very odd" and "strange," but that "people can draw their own conclusions" about the date.

The film has received extraordinarily unfavorable reviews, and holds a 15% overall rating and a 0% Cream of the Crop rating at the aggregate site Rotten Tomatoes as of September 2, 2007. It also received a rare "zero stars" review from film critic Roger Ebert.

The film has been described by various critics (most or all of whom are not LDS) as "the year's first honest-to-goodness exploitation flick," as "carrying an anti-Mormon agenda," as "some sort of attack piece on the Mormon religion," as "little more than wild-eyed anti-Mormon propaganda," as "a stridently anti-Mormon and cliché-heavy melodrama," as "unbelievably ugly and an insult to Mormons," as a "Swift Boating of Mormonism that advocates the religious intolerance it’s supposedly condemning," as "clearly anti-Mormon," as an "anti-Mormon broadside" that is "certain to fan the flames of hatred toward America's largest homegrown religion and continue the persecution that terrified the original Mormons."

The movie has "the chilling certitude of the self-righteous" that goes beyond "mockery" and is "practically a call to jihad [against Mormons]." It "equates the institution of the Mormon church with Islamic extremism at every opportunity," it is "propaganda pure and simple," is "filmmaking at its worst...full of propaganda," and it "goes way beyond history into the realm of speculation, rumor, myth and gossip." Critics further state that the movie "feel[s] like blatant propaganda," and that there is an "unmistakable air of evil about this enterprise, and not just an atrocity the Mormon church caused to happen 150 years ago" and its negative portrayal of Mormons is "unsubtle (in the manner most closely associated with Dr. Goebbels)."

The film "demonize[s] Mormonism (really, what else can you call this?)," characterizing the Mormons as "homesteading Nazis," as "grotesque monsters," as "baby-eatin' Nazis...hulking, borderline insane fundamental gorillas who flung excrement at anyone daring to besmirch the name of Joseph Smith," as "no better...than Nazis," as "self-righteous harbingers of divine doom," as people "so paranoid about persecution...so obsessed with doctrinal purity and so disdainful of other beliefs that they easily slipped into a murderous mode," as "animals and zealots," as "bloodthirsty religious extremists," as exhibiting "Snidely Whiplash-like treachery," as having "true brutality...in the same way that Steven Spielberg showed the viciousness of the Nazi's in 'Schindler's List.'"

The movie "may be the worst historical drama ever made...[because it] trivializes one of America's ugliest and least understood events," it is a "biased waste," it is a "maudlin, grotesque western" that "apes 'Schindler’s List' in hopes of creating a Christian Holocaust picture." It is "a toss-up as to whether September Dawn is more offensive as history, as allegory or simply as lousy self-important filmmaking."

There have been, however, a few somewhat positive reviews. Boo Allen of the Denton Record-Chronicle gave the movie 3 out of 5 stars, saying that "director Christopher Cain renders a suspenseful, gripping tale." Linda Cook of the Quad-City Times calls the movie "interesting." Ted Fry of the Seattle Times writes that the movie is a "mix of poetry and polemics" that despite "theocratic elements that come unnervingly close to the spirit of Mormon-bashing" is nevertheless "a mildly effective dramatic tale of period Western strife." Pete Hammond of Maxim gives the movies 2 1/2 stars, saying that Cain has made "a pulse-pounding movie experience reminding us that a terrorist act can happen anywhere, anytime, by anyone." David Tianen of the Milwaukee Journal Sentinel writes that the script's "great strength" is that Voight's character, Samuelson "is a zealot who behaves logically within his own belief system" in that he believes in "a theology that sees non-Mormons as wicked and degenerate." Consequently, "when Bishop [Samuelson] says things like 'May these children of Satan go to hell,' or, 'We have been honored above all others to be the chosen instrument of death," the hatred is more than mere craziness.

In a piece written for FrontPage Magazine, Ken Eliasberg states that: "I found the film to be artistically pleasing, theatrically well done, and, based on my less-than-exhaustive research, historically correct. [...] While the Mormon hierarchy denies any effort to directly or indirectly sabotage the film, it seems possible much of the criticism dealing with the film is derived from some common blueprint. [...] I hope that this notion is mistaken, and that there is no effort on the part of the Mormon establishment to do this film in. If there is such an effort, I have to believe it emanates from certain individuals who are acting on their own, who have so little faith in the power of their religion that they think a mere film about one isolated historic incident could do it harm."

The movie also comes at a time when Mormon Mitt Romney is running for U.S. President. This has brought the Mormon religion further into the spotlight. Robert Novak speculated that September Dawn is an attempt by Hollywood to negatively influence Romney's candidacy, and Roger Ebert echoed this possibility in his later movie review. Director Christopher Cain has denied this, saying he had not heard of Romney when he began work on the film 2 1/2 years prior.