There are two sure-fire ways to get yourself immediate mainstream media attention: Allude to terrorism, and do it on Twitter. Someone purporting to represent the dread Islamic State did both Monday, proving the U.S. military's public affairs business is a trainwreck but accomplishing little else.

Jeb Bush, the "smart" one, announced this morning in a tweet and a Facebook post that he is probably running for president in an election that's 693 days from now, and definitely forming a PAC through which you can give him money if you like the idea of him running for president.

Demonstrating all the alacrity of a scorned online fedora-enthusiast and all the civility of—well, of a murderous jihadi—a social media account connected to allies of the Islamic State has issued calls to kill Twitter employees for trying to stamp out radicals' accounts on the popular social service.

So a Cornell historian wrote a book about how slavery, rather than God, the Marlboro Man or Vince Lombardi, fueled America's capitalist development. But did you ever consider how nice some slaveowners were, Mr. Historian? Your Economist book reviewer did, and now he's getting torched on Twitter.