This is a not uncommon problem on the Internet, of course. The political/legal/lifestyle blogger Ann Althouse was plagued by nasty commentators to the point where for a while she closed the comments entirely. I am not quite ready to do that, but as of today, all comments will be moderated. We will see if that solves the problem. If it does not, then there are several other more severe measures I can take.
What is so odd about this is the whole kerfuffle came from a blog post that wasn't even objectionable to anyone. But one commentator left some comments that referred to another and then they started a fight between themselves. As this was entirely irrelevant to the post, I ended up deleting all those comments. This really infuriated one gentleman who has been doing everything he possibly can to annoy me ever since.
This blog has seen disputes and debates before and every single one of them, even when it involved politics, has been courteous and civilized. But there are some denizens of the Internet who have strange attitudes and, it seems, lots of time to indulge them. They are not welcome here.
Now let's have a suitable piece of music. How about the Mars movement from Holst's The Planets: