I will give you links that the FLDS is involved in child rape and physical abuse.
How about an eye witness who escaped from the cult?
Moreover, the very same practices in her torment were going on in Texas. The informant said so, and the Texas Rangers said so. (Notice no Janet Reno here - people tend to lose their perspective about the dissimilarities in the cases).
So, here ya go. Watch, read, and then research Google for more if you wish. Or even more simply, search keywords here on FR for FLDS, LDS, or the like. I am sure you will find a plethora of information. However, please don't ask me to do your homework for you. It is all available.
Woman describes ‘escape’ from polygamy
P.S. If this doesn't convince you - then I can't help you see.