Do you have any specific BofM "detriments and evils of inequality" quotes?
Maybe Spazz, Colton, or Gibbs can chime in here. Trust me, it's a major theme.
This is what came to mind, and remember I did not follow or read the whole conversation.
Book of Mormon
4Nephi
2."...There were no contentions and disputations among them, and every man did deal justly one with another.
3. And they had all things common among them; therefore there were not rich and poor, bond and free, but they were all made free, and partakers of the heavenly gift."
7. And the Lord did prosper them exceedingly in the land; yea, insomuch that they did build cities again where there had been cities burned.
24. And now, in this two hundred and first year there began to be among them those who were lifted up in pride, such as the wearing of costly apparel, and all manner of fine pearls, and of the fine things of the world.
25. And from that time forth they did have their goods and their substance no more common among them.
26. And they began to be divided into classes; and they began to build up churches unto themselves to get gain, and began to deny the true church of Christ.
35. And now it came to pass in this year, yea, in the two hundred and thirty and first year, there was a great division among the people.
42. And it came to pass that the wicked part of the people began again to build up the secret oaths and combinations of Gadianton.
46. And it came to pass that the robbers of Gadianton did spread over all the face of the land; and there were none that were righteous save it were the disciples of Jesus. And gold and silver did they lay up in store in abundance, and did traffic in all manner of traffic.
This is right before the two sides start fighting and it ends with the one group killing off the other group.
Not sure if this is what you were talking about, but it started with pride, and people seeking individual wealth and power while not sharing or caring for those without.
Yes is is a theme, or a cycle that tends to repeat itself.