First of all, thanks for making this thread, I think it is important to discuss these issues in the open, rather than developing grudges.
I think what you are mainly talking about are the comments by @Nevar and @TheAnonymouseJoker which are relatively aggressive. We could probably consider them violations against rule 2 (“Be respectful. Everyone should feel welcome here”), which we havent enforced that much so far. So enforcing that rule more strictly could already be a step in the right direction, though I am unsure where to draw the line (suggestions welcome).
That said, I think it is important to allow everyone to voice their opinion, especially if they disagree. If everyone agrees from the start, that doesnt make for an interesting discussion. This is also why I dislike the idea of fact checkers, because it likely means that one side gets excluded from the discussion, and Lemmy turns into an echo-chamber.
On the technical side, we are working on a feature that will let users block communities (so you dont see their posts anymore). That should be useful for people who simply dont care about politics (or other topics).