In 2009, the White House launched an effort to get people to snitch on those who expressed opposition to President Obama through a new official e-mail, flag@whitehouse.gov, and a web page on the official White House site. It didn’t quite last a fortnight, thanks to an outcry of anger over the idea that a President would be so petty and so paranoid as to need an official informant bureau in the White House. They dropped this about the same time that Obama finally dropped his war on Fox News, having lost on all fronts to control opinion. Did they learn...