that last sentence is pure semantics given that they are very clearly not jewish themselves and the extent of any "support" of judaism (if any beyond being ambivalent to it) is vague at best - but that's a bizarre tangent...
anyway...
i really dont understand US free speech laws because in the UK we still have free speech yet also have anti-hate speech laws in place (just something interesting... or worrying)
and id like to say that if the white supremacists have the right to protest then Antifa and BLM members (among many other groups) also have the right to counter protest because unopposed these ideas can take hold - it's like saying there's no need to put out a small fire because it's small even if it's inside your house... (and i quite like my house) - id also like to point out that while tensions were high, the antifa threats only came after an interfaith group who were peacefully protesting the rally were surrounded and enclosed (with police having withdrawn) by the white supremacists before the anti fascists and other responding groups stepped in - there was very much one aggressor throughout and it was not the counter-protestors