Justine McCarthy: Erstwhile imperialists' defence of Israel's merciless slaughter makes a mockery of democracy

Displaced Palestinian families seek shelter at the Al-Shifa hopsital in Gaza City. What crimes were committed by the 420 children, on average, being murdered in Gaza every day? Photograph: Bashar Taleb/AFP via Getty Images "I write at a moment of great anguish for the world," Craig Mokhiber began his letter of departure as the director of the United Nation's human rights office in New York. He said "a genocide [was] unfolding before our eyes" and the organisation he served seemed powerless to stop it. He was talking about Israel's mass killings and blockade of 2.2 million Palestinian civilians in Gaza….