I think the basic assumption that these kinds of political threads violate is that one's own political views are more ubiquitous than they really are.
The same thing happened after Obama was elected in 2008. The people spoke, right? Then what the hell was this Tea Party thing and where the hell did it come from? I'd never heard anything like it. Most people surely agreed with me, right? After all, Obama was voted in!
Now it's happening in reverse with the election of Trump. The people spoke, right? Then what the hell is this Black Lives Matter thing or Me, Too movement? They've never heard of anything like it from anyone they know, right? Most people surely agree with them because after all, Trump got elected, right?
This can be so very disturbing because ideas and principles that one holds dear are suddenly revealed to be held in contempt by a LARGE group of others. And that feels very threatening. So much so that predictions of civil war seem reasonable.
But, my question is, "Would you rather not have known that people feel this way?"
It's information, which in itself is neither good nor bad. Now we know what other people think (because they've been allowed to tell us) and how many others believe that way.
What's really troubling the most, in my opinion, is the knowledge that only about half the US population agrees with you and the other half not only disagrees, but vehemently so. I think both sides of the political spectrum suffer from this dilemma. It's the shattering of the myth that you are in the majority.
Furthermore, when people post, you learn things about them. They tell you who they are. Why would you not want that information?
So, bring it on. If nothing else I've learned a lot about people, and not just their political views.