Violence, like most concepts connected to the realm of politics, is still an essentially contested and also unclear concept that has been depicted and explained in the most various ways. At the experiential level, we all "know" what violence is, and, yet, one cannot simply make a checklist to objectify and quantify it.  Violence is often grasped as an ever present feature of human power over others, as a continuum of the "biological essence" of the human (expression of aggressiveness), or as a physical or historical creative process that supports the evolution of species.