I am most worried about problem (2), the way that people are closing their minds. I have said that very few bloggers or newspaper columnists seek to communicate with people on the other side or to open minds of people on their own side. Instead, the goal seems to be to ensure the opposite–that people on your own side keep their minds closed. You reinforce mind closure by demonizing the other side, using ad hominem and straw-man arguments, and by working intensively to reinforce your side’s narrative through using spin, denial, and bullying.
-Arnold Kling, as excerpted from this blog post