The Cat in the Hat Trend Keeps Producing Arrests. The Pattern Behind It Is Decades Old

Just before 9 p.m. on August 24, a teenage girl in West Kelowna, British Columbia, noticed someone in a red and white striped hat following her through her own neighborhood. She ran and got away. Local police still have not identified who was inside the costume.

By the third week of September, versions of that same scene, real or staged for a camera, had reached schools in at least a dozen U.S. states. The costume is the Cat in the Hat. The threats attached to it, mostly AI-generated images and rewritten nursery rhymes naming specific schools and students, have triggered a lockdown in Michigan, arrests in Louisiana and Colorado, and a felony harassment case against a Minnesota teenager.

A menacing mascot with a search function

The posts follow a template. A sinister, often AI-generated version of the Dr. Seuss character appears to lurk near a school or a named address, paired with a rewritten nursery rhyme that reads like a warning. Anonymous accounts then tag the school, the town, and sometimes specific students or staff.

Four girls between 13 and 15 were arrested in Berwick, Louisiana, over accounts police say did exactly this. A 14 year old in Grand Junction, Colorado, was arrested this month on suspicion of harassment and interference with an educational institution, after posts implied someone in costume would appear at a middle school. Grand Junction police put it plainly: the goal of posts like these, they said, is to scare people.

Minnesota produced one of the more specific case studies. On September 1, a student in Sleepy Eye was arrested over a threat connected to the trend, and the University of Wisconsin-Whitewater briefly issued a shelter-in-place order before investigators found no actual danger.

Drew Evans, a former homicide investigator who has led Minnesota's Bureau of Criminal Apprehension since 2015, said his agency treats every posted threat as real until it is proven otherwise, whatever the poster's intent.

“It's designed and creates fear among the kids going to our schools, and parents alike.”

This isn't the first costume

Threat trends organized around a single viral gimmick are not new. In December 2021, a vague TikTok trend that called itself National Shoot Up Your School Day pushed absentee rates above 50 percent at Pennsauken High School in New Jersey, even though the district and local police found no credible threat. New Jersey's homeland security office said at the time it had no information indicating any of the threats were real.

Officials investigating the Cat in the Hat posts say most have turned out to be hoaxes so far, the same pattern seen in 2021. That does not change how a threat gets processed once it names a school. A costume, a caption, or a video posted as a joke can still trigger a harassment or terroristic-threat charge, which is exactly what happened to teenagers in Louisiana, Colorado, and Minnesota this month. The gap between how a poster might see the post, a dark joke built for shares, and how a school resource officer is required to treat it, a specific threat until proven otherwise, is where most of these arrests are happening.

Worth noting: Minnesota's year-over-year count is the only public tally available so far. No agency has published a national total for this particular wave, so the true scale beyond individual state and district reports is not yet measurable.

What repeats every time is not the mask. It is the format: an image built or edited to look almost real, a specific school or student attached to it, and a platform built to reward the fastest possible spread. Swap the Cat in the Hat for whatever character shows up next, and the arrests, the lockdowns, and the same argument between teenagers and prosecutors over what counts as a joke will likely arrive with it.