Today on the homepage I write about Alton Nolen, a.k.a. Jah’Keem Yisrael, who became the latest perpetrator of “workplace violence” last week when he decapitated one former colleague at Vaughan Foods in Moore, Okla., then repeatedly stabbed another before being shot by the company’s COO, who happened to be a reserve deputy carrying a firearm.

While writing the piece, I spent a fair amount of time perusing Nolen’s Facebook page, which is a challenge for sheer grammatical reasons. (Facebook has apparently shut the page down.) A question: As of yesterday, Nolen had just under 1,500 Facebook friends. Did none of them think it odd that he was posting photos of the Twin Towers in flames alongside scribblings sympathetic to the attackers? Did not one of them — not a few of whom are Muslim — think his interpretations of the Koran suspect, let alone alarming? Did no one think twice about his post reading “JIHAD JIHAD JIHAD!”?

I find the Department of Homeland Security’s “See Something, Say Something” campaign vaguely Orwellian, but Nolen’s Facebook page was full of troubling things to see — and no one seems to have said anything.

Encouraging suspicion of one’s neighbors and friends — or “friends” — may not be the most patriotic of remedies, but it is preferable to invasive government snooping, which is the likeliest alternative if private citizens are uninterested in looking out for themselves. And this seems to have been a situation in which indicators existed in abundance, but no one cared to take note. Nolen was a zealous Islamic convert with a violent past posting pictures well-disposed to terrorists. Sure, it is easy to criticize obliviousness after the fact, but one does not have to be a Koranic scholar to see that Nolen was a prime candidate for a — ahem — “man-caused disaster.”

Were Nolen’s online interlocutors oblivious? Apathetic? Sympathetic? However you explain it, something seems to have gone awry in Oklahoma.