That's simply the way the last days will be, so the best you can do is prepare for it. This belief has led some to stock weapons and ammunition with their food storage and to mistrust any government outside the Church. Not my flavor of apocalyptic politics, but not as uncommon as one might think. Ephraim's Seed offers this prototypical Mormon nightmare as reality. The Church has been outlawed, government-armed thugs are sent after political dissidents, and wiretaps and armed state borders are simply a fact of life.
Personal liberty is a thing of the past.
Which raises a problem. If this vision of the future really is common to the Mormon culture, then it theoretically needs no further explanation because the intended audience already accepts it as real. But I don't believe that Mormon culture is quite that homogeneous in political approach, and I don't think you can simply offer that future with no explanation. Ephraim's Seed failed to offer reasons for this extraordinary future, and as such fails as even basic science fiction. In the future, the hearts of men will wax cold and evil will rule the world.