Two recent high-profile killings and the men accused in them have prompted comparisons among law enforcement officials and commentators, who say both cases show strikingly similar patterns of meticulous planning, cryptic messages left on bullet casings and a small but vocal cohort of online supporters who have celebrated the attacks.
Luigi Mangione, who is accused of fatally shooting UnitedHealthcare executive Brian Thompson on Dec. 5 in New York City, and Tyler Robinson, who has been identified by police as a suspect in the fatal shooting of conservative activist Charlie Kirk while he spoke at a Turning Point USA event in Orem, Utah, are both men in their early-to-mid 20s from established family backgrounds, authorities and media reports say. Mangione was arrested five days after Thompson's slaying in Altoona, Pennsylvania; Robinson was turned in to police by family members in Washington state late Thursday, according to law enforcement statements and media accounts.
Investigators say both killings were premeditated and executed in public settings. Prosecutors allege Mangione waited outside a Midtown Manhattan hotel and shot Thompson at close range as the executive entered to deliver remarks to investors. Robinson is accused of driving several hours to Orem, positioning himself on a rooftop about 200 yards from the stage and firing as Kirk addressed a crowd of roughly 3,000 people, then departing the scene and returning to his parents' home, according to law enforcement briefings and accounts of the manhunt.
A further unusual parallel is the presence of handwritten inscriptions on bullet casings recovered in each scene. Mangione reportedly scrawled words such as "delay," "deny" and "depose" on three casings; Thompson's killing has been framed by some online commentators as retaliation for alleged health-care denials tied to corporate practices. Robinson's casings are reported to have borne mixed messages, including the phrase "hey fascist, catch," a quote attributed to the anti-fascist song "Bella Ciao," and other taunting language. Authorities have cited those inscriptions as evidence of motive and premeditation.
Both suspects also left other written material or digital traces that prosecutors say illuminate their mindsets. Court filings and media reports say Mangione authored a handwritten statement describing his act as a corrective to perceived systemic wrongs and asserting bluntly that "these parasites simply had it coming," while describing American health-care costs and outcomes. In Utah, law-enforcement officials said Discord messages Robinson exchanged with a roommate detail logistics such as how he retrieved a rifle from a drop point and later wrapped it in a towel. Investigators caution that such materials are part of ongoing probes and will be evaluated in court.
The killings have generated polarized responses online. Within hours of Kirk's death, social-media posts and forums circulated messages praising the shooter and declaring the victim deserved to die, according to journalists monitoring those spaces. Supporters of Mangione—who appeared in New York court wearing loafers without socks in widely circulated photographs—have staged demonstrations carrying "Free Luigi" placards, alongside posts romanticizing the accused as a sort of vigilante. Law enforcement officials and some analysts have expressed concern about how quickly fringe online communities can transform an accused perpetrator into a cult figure.
Despite the public fascination, neither man was widely known as a political organizer before the killings. Reports say Mangione followed figures on both sides of the political spectrum online and had cited the Unabomber Ted Kaczynski in past posts, while Robinson, who lived in conservative Washington, Utah, is described by acquaintances as having become more radical over time. Officials have emphasized that social-media followings and casual online activity do not in themselves establish criminal intent, and that investigations remain underway to determine motive and any broader networks.
The legal paths for the cases may also mirror one another, with state and federal authorities both indicating interest in pursuing charges. The Department of Justice has signaled it is building a federal case in Mangione's matter, citing alleged interstate conduct, and federal involvement could affect sentencing options because New York does not have the death penalty. Utah retains capital punishment; legal experts say the state’s criminal case and any federal parallel would raise questions about venue and prosecutorial coordination. Courts are likely to be the forum for sorting those jurisdictional issues in the weeks and months ahead.
Prosecutors in both jurisdictions face the task of presenting physical evidence, forensic analysis of recovered casings and weapons, witness testimony and digital records that include purported manifestos and messages. Defense attorneys have not yet entered detailed public defenses in either case; both men are presumed innocent until proven guilty in court.
The cases have reignited broader debates about political violence, online radicalization and the dangers of glorifying killers. Officials in both New York and Utah have said they will take steps to protect court proceedings and address security at public events as investigations proceed. For now, the two investigations continue independently, with authorities gathering evidence that will form the basis for prosecution and with communities still processing the aftermath of attacks that unfolded in public settings and generated rapid, contentious online reactions.