That's not a coincidence. It's a direct product of cosmopolitanism. The cities that represent it most clearly are its capitals. Like any working system, it has rules. If you want the benefits, you need to play be the rules. If you don't, you're free to leave. Goodness knows your apartment won't go unfilled for long.
And you know, Roy Moore lost elections. How many Republicans did SFBA send to Washington lately?
And as silly and ignorant as Coulter is, at the moment when one starts saying that she does not have a right to speak here, one signs off on his moral and intellectual bankruptcy.
I was referring to the one where morons from both sides decided to show up with weapons and assault each other.
After that alt-right brought in their own thugs as well, which might be the ones you're referrring to.
In the antifa vs. alt-right contest both sides get a dishonourable second place.
No one cares about Huntsville, AL and most high-profile people would not reside there, so no one hears about any of this bubble behavior from the other side.
The most important cities (culturally and economically) are, at least, left-leaning. So, you'll only hear about conservatives being rejected by the "liberals" in {city}.
I grew up in a conservative town. Personal experience says the bubble on that side is arguably worse and more violent. Being openly gay or not-white or not-Christian (or accepting of those things) in my hometown was a good way to end up harassed and possibly assaulted on a regular basis.