More on Internet-driven reality shopping, and ideologically-loaded cultural speciation:
It is the beauty and the tragedy of the Internet age. As it becomes easier for anyone to build their own audience, it becomes harder for those audience members to separate fact from fiction from the gray area in between. As media consumers, we now have the freedom to self-select the truth that most closely resembles our existing beliefs, which makes our media habits fairly good indicators of our political beliefs. If your top news source is CNN, for instance, studies show you’re more likely to be liberal. If local radio and TV figure prominently in your news habits, you’re more likely to be conservative. […] Meanwhile, since the early 2000s, the American National Election Studies show that partisanship in the US has spiked drastically, with Americans on either side of the aisle harboring ever colder feelings about their political opponents. It’s hard to prove the country’s increasingly polarized media habits had anything to do with that, but it’s also hard to believe the two trends are unrelated. The country is being fed wildly different stories, all from media outlets claiming the other side is biased.
Media revolutions break things up. At least, the printing press did.