His crimes spanned nearly a decade before his 2002 conviction, and the investigation that followed opened questions that extended well beyond the killings themselves. Allegations made after his capture — that he had operated within a sex trafficking network connected to prominent figures in Toulouse — drew sustained attention from French media and investigators, though the claims remained deeply contested. The broader affair illustrated how a criminal case can metastasize into a political and institutional scandal, regardless of what is ultimately proven.

The attack on a Buffalo supermarket in May 2022 was a racially targeted act of violence, with ten of the thirteen victims being Black — a fact central to Gendron's stated motivation. He had radicalized online during the COVID-19 pandemic, absorbing white supremacist ideology through platforms where similar attacks were discussed and celebrated, and he modeled his actions closely on a 2019 attack in Christchurch, including the use of a livestream. The deliberate targeting of a neighborhood, the planning involved, and his stated intention to continue beyond a single location place this among the most calculated domestic hate-motivated shootings in recent American history.

His occupation as a traveling radio engineer gave Zhukov both mobility and cover across multiple Russian cities, a pattern that complicated investigators' ability to connect crimes committed years apart in distant regions. His victims were children between seven and twelve years old, and the full extent of his crimes remains uncertain — he confessed to more than he was convicted of, and authorities suspected involvement in additional cases across cities he visited on business trips. His arrest came only because one victim retained enough presence of mind to memorize his license plate and the view from his apartment window.

His name is fixed permanently to one of Boston's most celebrated civic landmarks, yet that legacy rests on a fortune built substantially through the slave trade. Operating within the triangular trade, he shipped enslaved people to the West Indies and returned with colonial goods, accumulating wealth that funded both a life of considerable luxury and the hall that would later become a gathering place for revolutionary protest. The distance between what made him rich and what made him famous has become a recurring subject of historical reckoning.

The circumstances of his 2007 arrest — police finding him in the act of consuming human remains, with additional flesh stored and cooked throughout his apartment — made Calva one of the more disturbing criminal cases in recent Mexican history. Investigators also suspected him in at least two other homicides, though he died by suicide in his cell before trial, leaving those cases unresolved. The discovery of an unfinished manuscript titled Cannibal Instincts and a photograph of Anthony Hopkins as Hannibal Lecter suggested a degree of premeditation and self-mythology that set the case apart from crimes of sudden violence.

Over four decades, he reshaped the boundaries of acceptable political speech in France, pushing nationalist and anti-immigration positions from the radical fringe toward the mainstream — a shift scholars labeled the "lepénisation of minds." His legal convictions for Holocaust minimization and incitement to discrimination against Muslims mark the points where his rhetoric crossed into the prosecutable. The party he built outlasted his leadership and, under his daughter, became a permanent fixture of French electoral politics.