Naturally enough, people will wonder why this was done. The most obvious and likely answer is money. Perhaps the initial motivation involved a desperate need for money or perhaps it just started right away with greed. People will of course wonder how these people could do such a thing. While it is easy to understand the psychology of a scam artist (they want to make easy money by tricking people), understanding the sort of person who would descrate corpses to make some extra money poses more of a challenge. That, it would seem, requires a bit more than the usual greed. It would seem to require either something that pushed the people beyond the normal moral limits or perhaps they were lacking whatever it is in most people that makes the thought of descrating a grave to be unthinkable.
From a philosophical perspective, one question is what makes this sort of descration wrong. The part about stealing the grave plot of one person and re-selling it is easy to handle. This is straightforward theft. In the case of what was done to the bodies, it might be tempting to say that the dead were not harmed. After all, they are dead and hence the person is long gone, just leaving behind decaying matter.
While it could be argued that if there is an afterlife, then the people whose bodies have been descrated could be aware of this and thus harmed by this misdeed. Of course, that requires some rather radical metaphysical speculation.
Interestingly, Kant‘s argument about why we should be kind to animals can be applied here. A corpse is not a person and hence could be seen as lacking in moral status itself. However, how a corpse is treated affects and reflect how a person would treat living people. As such, the mistreatment of human remains can be seen as violation of the duty we have to other humans. This, of course, assumes that Kant is right.
Obviously, the living relatives of those whose bodies were disturbed have clearly been harmed by this desecration. After all, learning that a relative has been dug up and tossed aside like so much garbage would certainly be an awful and horrible thing.
One reason why we feel so badly about the dead being mistreated is perhaps because they are completely helpless-they have no ability to resist or protest. They are, as it were, the most helpless of victims. There is also the idea that the dead have earned their rest and should not be disturbed. Of course, there is the challenge of reconciling this view with the fact that we mostly tolerate the disturbing of the ancient dead in the name of archeology.
In any case, this crime is horrific in many ways and almost inconceivable. Not only did these people do evil, they were also amazingly stupid. After all, how could they possibly think that someone would not notice what had happened?