On the night of November 10, 2015 (one day after system president Tim Wolfe resigned amid the Concerned Student 1950 movement) anonymous posts on the social-media app Yik Yak threatened to 'stand my ground tomorrow and shoot every black person I see' and 'kill' Black students gathered in parking lots. MU Police issued an MU Alert acknowledging the threats and reassuring the community that no immediate threat existed; in the early hours of November 11, MUPD apprehended Hunter M. Park, a 19-year-old Missouri University of Science & Technology student, in Rolla, more than 90 miles away.
6 messages in sequence · 4 verified verbatim
Confirmed wording is transcribed character-for-character from a primary source. Use Verify this quote under each message to open that source in a new tab and compare the text yourself.
Some messages in this sequence are documented (their existence, timing, and channel are sourced) but their exact wording is not preserved in the public record. Those entries appear as placeholders; only confirmed text is displayed.
This message is documented at this point in the sequence, but its exact wording is not preserved in the public record. The public edition displays only confirmed alert text.
MU Alert text quoted verbatim in ABC News coverage of the arrestThis message is documented at this point in the sequence, but its exact wording is not preserved in the public record. The public edition displays only confirmed alert text.
To check this alert, Claude (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.
We are aware & updating http://mualert.missouri.edu. Do not spread rumors. @MUalert only reliable source in emergency. https://x.com/bowtieger/status/664255273394003968
Final assessment
All reads agree the message is signed with the branded '@MUalert' handle and links mualert.missouri.edu, clearly identifying the sending system.
Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.
Final assessment
Unanimous: no specific hazard is named, only a vague reference to an unspecified emergency situation being updated.
What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.
Final assessment
Unanimous: no location is given anywhere in this rumor-control follow-up.
Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.
Final assessment
Unanimous agreement: 'Do not spread rumors' plus directing readers to the official alert site counts as an instruction to recipients.
The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.
Final assessment
Unanimous: no clock time, date, or recency marker appears in the text.
When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.
Final assessment
Unanimous: no consequence or severity is stated.
What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.
Systematic AI judgments with visible reasoning, not human-validated codings.
About this analysisEvery claim on this page is meant to be checkable. Open the links below (and the Verify this quote control under each confirmed alert) to read the original university, news, or archive page yourself. Hostnames are shown so you can see where you are going; archived copies survive when live pages move or disappear. See also our methodology.
Campus Alert Archive. "University of Missouri: Anonymous social media threats against Black students; suspect arrested within hours." Incident of November 10, 2015. Added May 2026; last updated July 2026. https://campusalertarchive.com/case/university-of-missouri-yik-yak-threats-2015-11-10/
Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.