unos a otros (what one does to the other)
-this painting shows skeleton-like entities holding one of them in the air. this skeleton is the only one wearing a wig, and is much higher up than the rest of them.
-this painting depicts bodies being carted to be buried. this was part of a collection of paintings surrounding famine.
y no hay remedio (and it cannot be helped)
-this painting is of a man bound to a pole blindfolded, likely about to be executed. this is implied by the dead bodies surrounding him on the ground, and also the uniformed men in the background with weapons, killing the others that are bound and blindfolded.