Something rather weird happened in London last week. For some time, the Guardian, a liberal, broadsheet, “respectable” newspaper, has been hammering the News of the World, a populist, tabloid, low-life newspaper, over its employees’ penchant for “hacking” the phones of royals and celebrities — Prince Harry and Hugh Grant, for example. This isn’t as forensic as it sounds: Until recently, most British cellphones were sold with the default password set to either 0000 or 1234, and most customers never bothered to change it. But last Monday it emerged that the News of the World had also hacked into the telephone...