Sentence:  Perhaps Derrida is recalling Rembrandt's drawing Abraham's Sacrifice. If this is the work of art, why "tear it to pieces" (dechirer) and ram it down the <WSD>shithole</WSD>? Is Abraham, father of the Jewish faith, a shit, perhaps "the" shit that the System proper must flush away? 
Meaning of the word marked with <WSD> tags:  A hole into which one defecates or dumps excrement.