I'm thinking of making the theme for my graduate course next semester on Spanish poetry violence. Poetry and violence. Real and symbolic and everything in between.
Lorca. Looking at the way violence is sacralized and aestheticized, sexualized, etc...
Aleixandre: death, love, and destruction...
Miguel Hernández. Look at some of his war poetry.
Gamoneda: violence and suffering.
Rossetti: martyrology and sexuality.
I think this could work, because violence is pretty much glorified in our culture from all sides of the ideological spectrum. Just about everyone loves violence in some form or another. The passive acceptance of violence is present in the Christian tradition very strongly.
I have no theory of violence.