Here's what now passes for "news gathering" at the NBC television network in the brave, and still relatively new, world of 24/7 electronic news broadcasting: Last weekend, a crew working for the NBC News magazine program "Dateline" showed up in Martinsville, Va. for the NASCAR stock car races. With the crew were some "Muslim-looking men" - whatever that means - as part of a "Dateline" effort to show how people in this country would react to "Muslims" in their midst. In a recent statement, NBC News said it was pursuing the issue because it was "intrigued by the results of...