Re: "lucky few who have managed to avoid hearing about the boiling cesspit ....
"political liberalism"
You mean respectful behaviour. People (I use the word lightly) like Bannon aren't reacting to "political liberalism"; they're reacting to being told to be respectful, if they want to participate in society. Society is a big mix of differences, not just in what people think and prefer, but who they essentially are, as people. It's not "political liberalism" to say that people who are essentially different from the majority should be extended equal treatment and equal opportunity; and that those who think different(ly) should be leashed when they try to prevent equality, equivalence, and equity.
Biting the hand that feeds IT
