Many of you probably saw the network news reports about the United Airlines flight yesterday that returned to Dulles International airport when a crazed passenger yelling something about Jihad was restrained by other passengers. What you might have seen only on local but not on national broadcasts was a crazed Pennsylvania State University professor who began ranting loony left slogans on a flight from Nicaragua to Miami last weekend. The Washington Post published a story about professor Karen Halnon whose rantings sounded too embarrassingly close to an MSNBC host for NBC Nightly News or the other national broadcasts to cover. Even the...