Check out r/Libertarian sometime. After it was radicalized by self-professed fascist moderators and turned into a pro-Trump meme board, the admin stepped in and installed a moderation team that spent time coming up with rules to prevent the subreddit from being overrun by authoritarians again. They added legitimate left-libertarian[1] moderators, and there are left-libertarians users that post there.
I bring it up because it is the only conservative space I've seen that doesn't end up posting helicopter ride[2] memes at people they perceive to be even slightly to the left of them.
In 2009, they purposefully cropped video of the main protester outside an Obama town-hall meeting to only show his back and slung rifle, and then used the footage to immediately launch into a panel discussion positing that the primary motivation for the protests against Obama was racial animus. The protester was black.
Here is the footage (paired with another incident of egregious misreporting in 1992): https://www.youtube.com/watch?v=fvBQDHqdCck
The sad thing here is that I'm genuinely open to having my opinions changed, and have a history of changing my view in response to argument in the past. But can't have my view changed if I'm too scared to even have the discussion ;-).
The thing is, as a leftist I used to be able to have conversations with conservatives. We had different values, but a largely shared understanding of reality. That gave a common basis for contrast and discussion.
Now, that's gone. My biased perception is that the worst of it started on the right: a ways back Fox started creating a bubble of alternative reality, and that's been hugely amplified with the arrival of social media. I started struggling to communicate in meaningful ways. More recently I've found myself fact checking my own community more often than I used to - I wonder if Trump has sent leftists crazy in the same way that Obama did the right ;-).