After spectacular acts of violence, the hunt for suspects’ online trails — and the sources of their presumptive radicalization — often begins before a name has even been officially confirmed. Sometimes, as in the case of the 23-year-old mass shooter who targeted a Minneapolis Catholic school in August, posts provide evidence of nihilistic ideologies or other motivations (in that instance, an apparent idolization of other mass shooters and a desire to perform for aspiring ones). In other cases, such as that of alleged United Healthcare CEO assassin Luigi Mangione, the evidence is confounding , revealing an online profile that nobody would have found alarming, or even particularly interesting, before he handwrote a manifesto and pulled a trigger.

When conservative influencer Charlie Kir

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