Morality as a Constant

I recently encountered two different pieces of media that argued, very briefly, that morality is a social construct.  The first was a in a book that I've been reading on my lunch breaks at work, the terribly named Deathworld 2, and the second was a stupid video defending the existence of "pink toys."  These were each released nearly fifty years apart, yet they still take the time to argue the same thing.

In Deathworld 2, the main character, Jason, has been arrested by an overly righteous policeman and is being taken back to the planet he robbed to face his crimes (Jason cheated while at a casino in the first Deathworld).  In order to distract his captor, Jason challenges his beliefs by saying that morality is set by the society that creates it.  This of course angers the cop enough for Jason to make his next move.

In the video, the creator, Movie Bob, addresses the concern that apparently many people have about the perceived sexism of boy- or girl-themed toys.  You know, action figures for boys and dolls for girls.  According to Movie Bob, these toys aren't the problem, rather society is.  And then in an off-hand comment, says that morality changes depending on which society you belong to and that things for kids in the future will be better as more people recognize that.

I also recently read about the conversion of the king of Lamanites and how his people would rather die than to ever pick up another weapon of war.  These people had created their own moral code that said that a ruler could kill his servants if he was displeased with them, but it was a false code.  True morality comes from God and is unchangeable.  Just as the Anti-Nephi-Lehies changed their lives to align with the Gospel, we too are required to live according to the commandments.

Even though many aspects of society change as time moves forward, morality was given to us by our Creator, and since we didn't create it, we have no right to alter it.