Do you remember the story of Othello? He had a good marriage -- until Iago, who had an axe to grind, started whispering in his ear. He told Othello not to trust his wife. He planted seeds of doubt and suspicion. He sowed discord in the family. By the end, Othello had killed his wife and then himself.
I submit to you, my brothers and sisters in Christ, that almost every news outlet and a good many political blogs fulfill the role of Iago in our society. It is absolutely routine to see big name news outlets slanting the news; I can't think of one that doesn't put their thumb on the scale. In my mind, I have begun to think of news outlets as Democratic-affiliated and Republican-affiliated; on controversial stories, it's fascinating to check both sides to get some perspective. But it's eye-opening how routinely both sides are spinning party propaganda and presenting it as news. The blogs that present political news are frequently at least as bad as the old-style media outlets.
Again I submit to you, my brothers and sisters in Christ and particularly here my fellow bloggers, that we should not fulfill the role of Iago in society. We should not be the ones to sow discord among brothers. We should be the peacemakers, not the ones fanning the flames of distrust, closed-mindedness, and resentment. Someone who distrusts the motives of "the other side" is, by definition, closed-minded against whatever they may have to say.
And one last thing: I also submit to you that the proper response to Iago is "Be quiet!" And the proper way to identify Iago is to check when you are incensed against other people, and who made you that way. Then you'll have found Iago.