via Media Channel
American pundits spend a good deal of their time pondering partisan intensity, and how it has sharply increased over the years. At some point in such discussions, it is traditional to note that the sorting of America into ever-more flinty conservatives and ever-more liberal progressives has coincided with the rise of cable television and the internet. The problem, it is asserted, is that too many Americans consume their news from inside an echo chamber that reflects their existing prejudices. Oh, for the time when the nation settled down around the TV to watch the network news from Walter Cronkite and his peers, who delivered a broadly centrist diet of news from home and abroad in a tone of take-your-medicine seriousness.
Some of that hand-wringing is to the point. Attend Republican or Democratic campaign rallies, and you certainly hear the same talking points from many activists there, and many of those soundbites and factoids come from cable, talk radio and the same handful of partisan blogs.