This sounds like it boils down to "everyone I dislike is a Nazi." The mirror image of this would be:

> Group A: “We should punch commies, we actively encourage punching commies” > Beehaw: “Hey! You can’t advocate for violence towards people!”

> Group A: “They’re commies, they deserve it”

Something along those lines. In this case not exactly “punching commies”, but advocating something “should happen to commies and their ilk”.

I know who John Brown is, but that history is completely immaterial to the topic at hand.