The jig is up, as the bad guys used to say in the movies.When Rachel Maddow told her MSNBC audience on the night of the Iowa Republican caucuses that she would not be showing the victory speech by decisive winner Donald Trump, I started writing this column in my head.What arrogance, I thought. Whether MSNBC likes Trump or not, if they claim to be journalists, they can’t refuse to air obviously newsworthy events merely because it makes them unhappy. That’s not how actual journalists even think. But of course, that’s exactly what they have been doing for two decades, and CNN right alongside…