On Monday, the interview show Amanpour & Co., which airs on CNN International and taxpayer-supported PBS, aired a conversation between host Christiane Amanpour and Jelani Cobb, the dean of Columbia Journalism School, both fretting over the perils of Trump and bringing the Joe McCarthy era into the discussion (you know it’s serious when journalists bring up the Red Scare).The show included this laugher of a line fromAmanpour: “And yet, most journalists, most — I guess, mainstream media would say, it’s not our job to tell people how to vote.“Cobb agreed in “yes, but” fashion, insisting journa …