“Did they have a valid permit”
I just checked some documentation and it does not appear that the First Amendment requires a permit to express speech.
Didn’t you just call them “Nazi scum” a minute ago?
What is never ok by the first amendment is blocking traffic without a parade permit. When the Mayor of Baltimore kept saying that people shutting down roads,including interstate highways, were just exercising their first amendment rights, I was outraged. When no one in any position of authority or media prominence did not call her out on that, I was further dismayed.