We don't need nazi rallies for people to be exposed to nazi ideology, we have the holocaust museum and other educational settings where people can learn about that without a bunch of hatemongers publicly displaying threats against other people.
My kids aren't going to be doing any sex or drugs and alcohol, I kept them in a very strict environment and gave them all the information and kept them away from anything threatening. I'm sure once they go to college they'll be set on a perfectly good road because I was sure to keep them that way and give them all the education they needed.
Oh wait what is happening
Would you support someone's right to promote child sexual abuse, as long as it is words? What about direct threats to individuals? Are you cool with someone threatening your life as long as they just used words?
Probably not, in all three cases. The Nazi example is already an extreme borderline case, since they are basically advocating for crimes, but there's a little bit of a political speech aspect to it and sometimes some vagueness to the overtly violent aspects. To me it pushes it just over the line to where I think yes it should be allowed. To me your examples are well over the line into just being crimes. In some cases Nazi speech is explicitly criminal, in which case, sure, prosecute them for threats of violence or seditious conspiracy or whatever criminal speech, but not just for using the wrong symbology.
Let me ask you this: It sounds like your goal in this is to "win." Like we have to talk, and you have to educate me on how your viewpoint is right, or prove to me or an audience that your way is the right way and mine is wrong. Do I have that right?