Reference to the Fascist dictator of Italy from 1922 until he was deposed in the face of advancing Allied armies in 1943. His irresponsible policies, including launching various wars of conquest years before his military and industry was ready resulted in a humiliting defeat of his countrymen. In 1945 he was shot and strung up alongside his executed wife for jeering crowds to spit upon.
1. A gargoyle is a drainage spout found on Gothic structures. Though many are grotesque representations of human or mythical forms, the proper context is that of a structural element, not a mythical creature.
Gargoyles were often carved into grotesque cariatures of people the stoneworkers might personally know.