"Normally when we see anger, behind it is just plain fear"

This relates more to parents in my mind right now. What could bring them to fear? Failing to support your family? Having no time to spend with your children or spouse? to most it is the fear of children straying away from the church. When we don't know what to do we tend to be overwhelmed and we tend to hide or act out because of our fears of failing. 

"Who are these straying sheep--these wayward sons and daughters? They are children of the covenant, heirs to the promises, and have received, if baptized, the gift of the Holy Ghost, which makes manifest the things of God.  Could all that go for naught?” (Orson F. Whitney Conference Report Apr, 1929) "

The measure of our success as parents, however, will not rest solely on how our children turn out. That judgment would be just only if we could raise our families in a perfectly moral environment, and that now is not possible. 

It is not uncommon for responsible parents to lose one of their children, for a time, to influences over which they have no control. They agonize over rebellious sons or daughters. They are puzzled over why they are so helpless when they have tried so hard to do what they should." 

(Boyd K. Packer, 1992 Spring Gen Conf, “Our Moral Environment”) There is always hope for us! We need to do our part and be satisfied with that. The rest will be taken care of in one way or the other.