So Darius Rucker sings "White Christmas" during NBC's Rockerfeller Center tree lighting show and (probably most likely liberal) ignorance strikes again."Surreal," "ironic," "awkward," "total fail," are just a few of the words used in tweets (from the Twitchy link above) describing the performance.Perhaps it's inevitable that the further away we get from certain pop culture iconography the more out of touch the current generation becomes with it. That must be the case here...it has to be. (for the sake of my sanity I'm just going to keep telling myself this)One of the most famous disasters in history, the sinking of the...