The film, Heaven's Gate, was a good view, although still tedious at over 4 hours. But the film took great license - as usual with Hollywood. James Averill (Chris Christopherson), and "Elle" were actually married in real life. Their main contribution to the Johnson County war, was to start it by being hanged. Well, by starting it, I mean it came at the beginning, not the end. Here's the real scenario: James Averill and Ellen Watson were secretly married because one homestead could be given to each family. By filing as single individuals, they could get two homesteads. They chose homesites on Crazy Woman Creek actually controlling the water above the land held by a powerful member of the Cattleman's Association. He offered to buy them out repeatedly, which they refused.
Although characterized in real life as the owner of a brothel (Cattle Kate), and a prostitute herself (and also in the film), there is no real evidence that was true. It is known that she bought many head of sick cattle, nursed them back to life, and was later accused by the Cattleman's Association of receiving the cattle in trade for "lewd acts'. In the end, she was accused of rustling - an act almost certainly untrue. So much for this part of the myth of the "American West", which is a gooble-de-gook of myths spanning a time period of about one hundred years.
In real life, she and Jim Averill were surprised one day by several members of the Cattleman's Association, taken in hand, and promptly hanged. Those perpetrating the injustice were never brought to trial. But that was the first link that led to the murder of Nate Champion, and the start of the Johnson County war.
Quite different from the Hollywood version which shows her shot at the end.
Other than that, I think the main problem with the film was the editor, who could have made the action a faster pace by more skillful editing.