4 ideas
During the 1630 plague, Milanese authorities arrested health commissioner Guglielmo Piazza on a neighbor's report that he had smeared walls with ointment. Under torture and a promise of impunity he named the barber Gian Giacomo Mora, and both were executed on the wheel. Mora's house was razed and a 'Column of Infamy' was raised on the site to commemorate a crime that never happened; the appendix reconstructs the trial record to show how this was done.
Manzoni argues that the plague-spreader convictions cannot be excused by the superstitions of the age, because the judges broke the legal safeguards of their own time. They ignored contradictions, used torture beyond what the law allowed, and offered impunity in exchange for accusations. Individual moral responsibility therefore persists even inside collective error: the judges had the means to see the truth and chose not to use them.
In the novel, physicians and magistrates first deny the contagion, then call it 'malignant fevers', and only later admit it is plague. They adjust the name to avoid inconvenient measures, and each delay spreads the disease. When the danger can no longer be denied, the pent-up fear turns into a hunt for human culprits: the untori, or 'anointers'. Read this way, scapegoating comes after, and partly because of, an authority's refusal to name the real cause.
Don Rodrigo stops the wedding of Renzo and Lucia without ever acting himself. He sends two bravi to threaten the priest Don Abbondio, whose fear makes him complicit. The lawyer Azzecca-garbugli bends the law toward the powerful, and the edicts against bravi are issued over and over without being enforced. Oppression works because each link in the chain can say it only acted out of fear or duty, while the law exists on paper and not in practice.