The way this sounds is that you are more concerned about politics as in people who take party positions and may feel excluded as a group when the majority of the community takes a different position. This is a slightly different issue i.e. party politics, and I think it is fine/a good thing, but it is also important to distinguish the two. This should essentially be under the same umbrella as personal attacks, as they are essentially the same thing.
I don't feel this need to be an explicit policy. I mean it gets into the entire "what is politics debate."
Hackernews is about hacking (software, hardware, life), and I still see tons of that on here -- well that and Amazon spam, but that's mostly due to their recent conference/product announcements and will probably die down soon.
https://news.ycombinator.com/item?id=13095475
You'll need 'showdead' set to 'yes' in your profile if you want to see all the comments in it.
When I look at the tone of the downvoted/flagged "dissident" comments (not a value judgment, just an objective description of perspectives that are not generally well-tolerated in intelligent, cultured, Western circles today), and compare it to the tone of the "normative" comments, I see very little difference.
They are both slightly snarky, hostile, exasperated and dismissive. If I was moderating on tone to oppose conflict, I would not like seeing either kind of comment. But I would not consider this tone level worthy of the Giant Banhammer.
But the banhammer is applied very asymmetrically -- both by voters/flaggers, and by moderators. Or so it appears to me.
The result is a context in which "dissidents" feel like they're essentially sitting in the back row next to the teacher's pet. Any time Jamal has a spat with Andrew, the teacher's response is the same: "Jamal, why did you hit Andrew!" "Jamal, stop being mean to Andrew!" But Andrew can say pretty much anything to Jamal.
And both sides argue vociferously that the teacher is unfair. Jamal feels it's unfair that the rules seem to be different for him and Andrew. Andrew feels it's unfair that Jamal, that annoying idiot, is even allowed to be in the same class as him.
It's relatively easy to adopt "both sides complain about the teacher" as the definition of "the teacher is just enforcing fairness and good behavior." But in fact, whatever the teacher draws the line, one side will always want it farther to the left, and the other side will always want it farther to the right.
Well, okay: one solution, if there's no practical way around the asymmetry, would be to make it explicit in the guidelines. You could say: when expressing unpopular views, make a quadruple-strong effort to ensure your perspective is presented clearly, sincerely, civilly and humbly.
What really rankles Jamal isn't even that he's a second-class citizen. He could deal with that. What rankles him is that everyone keeps denying that he's a second-class citizen, while in practice treating him as one.