But between the volume of what I've seen myself, and the high likelihood of SOME crazies existing in almost any kind of group that exists (not just politics, but companies, churches, courts, etc.).
Now is there a literal leftist equivalent of Kiwifarms out there doing exactly the same stuff? I genuinely have no idea, I'm not making that claim. It certainly helps, though, that people on the left are a LOT more technically inclined, and probably smarter in general, on average. They're all on Signal or Discord.
Again, I'm NOT right-wing, or defending KF. I'm just saying that violent rhetoric on the internet isn't an "us vs. them" problem.