This is the 2nd of a two-episode story on the sad effects of hatred towards those who believe differently and on those who hate. I do appreciate writers tackling bigotry and prejudice in 1966, something we still struggle with today. It is very true that prejudice has to be taught, it doesn't come naturally.
The story is very basic, a new preacher in town, Parson Parley, stirs up the townspeople against a Mormon, Heber Clauson, and his two wives, one of whom is pregnant. The other main conflict is the local rich rancher, Grant Carbo, will do anything to make one of the wives, Susannah, his. Parson Parley and Grant Carbo scheme together in the first episode, but later have major conflict.
Heber Clauson, "Someday there will be a world without hatred, bigotry and blind prejudice."
Now, in 2018, it feels like we are no closer to that ideal than in 1966. It is just the hatred, bigotry and blind prejudice has changed a little. If you don't want to read spoilers, stop reading now.
SPOILER: At least, near the end, with Clauson shot in the back by Carbo and Carbo shot in a gunfight with Little Joe, the rest of the mob turns against the preacher and rides away.
After Elizabeth Ann gives birth she asks Susannah to quote the Mormon church's 13th article of faith. and just as she is dying. I found it inspiring enough that I looked it up, very well said.
The preacher and wife who show up at the end of the show reaffirm that there are still good, loving people.