In 2008 I was reading an article in The Times about the Bosian War in the 1990s. In referring to a particulsrly horrible atrocity involving Bosian Muslims, and darkened room and Sledgehammers, the journilist likened the scene to one of Goya's etchings from this series. Well, the expression timeless is overused when referring to art, but here is bang on the money.
Goya is rightly regarded as one of the Fathers of modern art. Perhaps, in part, because he was a genius; perhaps, also, because he lived through the collapse of the Ancien Regime, and the birth pangs of a modern European polity. Particurly so in the very modern seeming Peninsular War between the Spanish people and Napoleonic France.
Robert Hughes, the art critic, insightfully points out in his outstanding biography of the artist, that maybe his deafness made him more alert to body language. And that this is the factor that so informs and imbues his portraits, particularly of Spanish royalty. Further, it informs all his art: Goya was clearly a man of marvelous visual perception. But beyond that, he has an uncanny ability to be passionately involved in his paintings, and yet maintain an intellectual, creative, objectivity, thus maintaining control of the metaphorical imagery in the art.
All these factors come into play in these astonishing etchings. Note, for instance, his famous 'shorthand' of rifle barrels, and nothing else protruding in from one side of a picture. These are soldiers, who cares who, committing atrocities. It is a powerful and non-partisan metaphor: we are ALL to blame.
Pity, compassion, anger, grief, and dumbfound puzzlement at how such things can happen, are writ large across this series of minature masterpieces that record the timeless quality of man's inhumanity to man.