The paranoid police and the "see something say something" do-gooders do not usually know the whole story, whether someone's engaging in a typical homeless survival behavior, or making an in-joke that could only be understood in its context, or someone's cultural background or whether someone's got mental illness. Then they act like cowboys and next thing you know your town's war zone and someone's either murdered by cops or in jail for no good reason whatsoever.
I believe (without getting into conspiracy theories) the police response SOP on alleged mass shooting or explosives is never designed to minimize disruptions and mass panic, but rather amplify them and to condition the populace into a quasi martial law.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko