There are a lot of very bad,evil people on the left, and not all of them are ignorant tools.
But I would not use the word “unnerving” to describe my reaction to them. What they say is indeed cause for reflection and preparation. But “unnerving” is too much like “frightening” for me.
Sadly, I think they may drive us to the time where it is necessary to “put on the whole armor of God” and deal with them. But I don’t think any real American should feel frightened or unnerved by them.
Frightening is the word I originally used, but I changed it to “unnerving” for exactly the reasons you specified.