If you ever find yourself in the same room as MSNBC's Lawrence O'Donnell, make sure to avoid the topics of Labor Day and hammers, and definitely listen to his directions. Thanks to the fellas at Mediate, the world has now been blessed with leaked footage showing the "Last Word" host losing his cool for more than eight disturbing minutes after things failed to go his way. Taken from the show's August 29 airing, O'Donnell throws a childlike tantrum after someone in his earpiece is heard talking about Labor Day just seconds after wrapping up a segment on US President Donald...