Remember when lightning struck the Salt Lake City Mormon Temple a couple years ago, and the Angel Moroni fell off? Apparently, that's not the whole story; the whole temple nearly fell. They are now semi-secretly rebuilding it (they are calling it "renovations"), and the workers found a giant network of tunnels underneath the temple.
Start at 11:15 in this video: https://www.youtube.com/watch?v=YDf_ymNRk6E
I'm sure there are many really good people who are Latter Day Saints, just as there are many good people in other religious organizations. They're not the ones that should be held accountable. It is the high up leadership, just like in other large religions. Huge corruption by them is not out of the question.