Psalm Zero - Stranger to Violence lyrics

What's that in the background? Is that the shadow of the pyramid we made? What's that in the background? The graven image of the mirror and the blade Stranger to Violence I never see the blood But every day, something needs to die For me to live, for my fantasy And every day, the sky is not enough To get me up, to sustain me And offscreen, the severed head still rolls Unblinking eye of the casualty And when the frozen face comes to their shore They'll get on board Elsewhere, meanwhile, clean hands, stranger