Rotolo's influence within the Sicilian Mafia extended well beyond his formal rank, with informants placing him as the functional representative of his mandamento on the Commission despite holding the title of underboss. His position in Palermo's Pagliarelli area placed him within a long-established criminal hierarchy, and the gap between his official standing and his actual authority speaks to how power within Cosa Nostra has often operated through back channels rather than declared rank.

His history of violence against women spans decades and multiple states, beginning long before his eventual murder convictions — a pattern that was visible to authorities and ignored at critical intervals. Jablonski had prior convictions and had served time for killing a partner when he was released on parole in 1990, and within a year had killed three more women in rapid succession while crossing the country. The murders in 1991 were marked by a level of brutality and mutilation that distinguished them even within the category of serial homicide. His case is frequently cited in discussions of parole evaluation failures and the systemic gaps that allowed documented, escalating violence to go inadequately addressed.

A trained nurse who became an SS camp guard at twenty-one, she was known at Stutthof for brutal treatment of prisoners and later supervised inmates at Bergen-Belsen through some of the camp's most lethal months. Survivor testimony at the Belsen Trial described shootings and fatal beatings, earning her a ten-year sentence — of which she served six. In a late-life interview, she framed her own culpability narrowly, a posture that sat uneasily against the record of what witnesses described.

Rung's case is notable for the sustained difficulty investigators faced in connecting his crimes, a gap that lasted over a decade and contributed directly to the wrongful imprisonment of an innocent man. Operating across Berlin between 1983 and 1995, he killed seven people using varied methods — a circumstance that obscured any pattern before DNA profiling became widely available. His continued violence inside prison, including a fatal assault in 2003, extended his legal record well beyond the original convictions. The forensic assessment that he acted "despite his normality" has made him a significant reference point in German criminological literature.

As head of the NKVD during the bloodiest years of Stalin's Great Purge, Yezhov oversaw a machinery of mass detention, coerced confession, and execution that consumed hundreds of thousands of lives — a period so defined by his methods that it came to be called the Yezhovshchina. His administrative efficiency in directing the terror made him both indispensable and, ultimately, expendable; Stalin dissolved the apparatus around him and had him arrested on the same grounds used against countless victims before him.