Violence is difficult to define because the term is a complicated concept which broadly carries descriptive and evaluative components which range from harming non-human objects to human self-harm. Ralph Tanner cites the definition of violence in the Oxford English Dictionary as "far beyond (the infliction of) pain and the shedding of blood." He argues that, although violence clearly encompasses injury to persons or property, it also includes "the forcible interference in personal freedom, violent or passionate conduct or language (and) finally passion or fury."
