From The New York Times

‘But for Mr. Romero, these effects were incidental to his broader theme: how mutual contempt and tribal self-interest so often prevent people from banding together in the face of a mortal threat. The flesh-eating dead, at least, come together in mindless self-interest. But the embattled residents of the farmhouse bicker and betray one another even as the darkness closes in. Mr. Romero viewed them as a metaphor for a society so deeply invested in petty enmities that it failed to see it was being swallowed alive.

His other great warning was that evil often resides in the utterly familiar. ‘