In a civilized society, you don't listen quietly to demons like Buchanan and Horowitz spewing their madness, waiting politely for your chance to rebut like it's a high school debate team match. The very act of engaging them in discourse lends them a legitimacy that they haven't earned; it is unconscionable to allow them to present themselves to society as rational human beings with opinions and beliefs and arguments when they are not. They are not just people we disagree with, for the sake of fuck. They are not playing our game--they are not making a good-faith effort to make sense of the world and do what they can to make things better--and we shouldn't pretend that they are.