Read this when
The most unsettling thing about him was how ordinary he was.
This is a hard read, and it is meant to be unsettling.
Political theorist Hannah Arendt reported on the 1961 Jerusalem trial of Adolf Eichmann, a Nazi official who helped organise the deportation of Jews during the Holocaust. Rather than finding a monster, she described a careerist who spoke in clichés and avoided thinking about what he was doing, and she coined the phrase 'the banality of evil'.
Penguin Classics paperback, ebook and audiobook; widely held in libraries (check Libby).
Heads up: Discusses the Holocaust and mass murder.
Age: Not rated (suggested 16+)