Exactly. These are obviously the bodies of humans' genetically-engineered descendants from the far future; they've somehow traveled backwards in time to more than a millennia ago where some tragedy befell them and their corpses were preserved until the present day.

Is something big happening in Mexico so that there's a need for a distraction like this?

I saw something similar occuring in my country. When the newspapers report about a scandal, a new distraction is created.

Human stupidity is the fifth element. Its on the rise. We see, rarely seen manifestations of it.