You Americans have a very weird relationship with the ~~second~~ first amendment - and the Nazis really took it as a "free from criticism" amendment, now, haven't they?
Stop giving these assclowns the benefit of the doubt. Stop accepting the "it was only in jest" excuses when they push their agenda. Sartre said it right:
Never believe that anti-Semites are completely unaware of the absurdity of their replies. They know that their remarks are frivolous, open to challenge. But they are amusing themselves, for it is their adversary who is obliged to use words responsibly, since he believes in words. The anti-Semites have the right to play. They even like to play with discourse for, by giving ridiculous reasons, they discredit the seriousness of their interlocutors. They delight in acting in bad faith, since they seek not to persuade by sound argument but to intimidate and disconcert. If you press them too closely, they will abruptly fall silent, loftily indicating by some phrase that the time for argument is past.
While he does specify anti-Semite, in the context it's clear that he means Nazis.
Push back on Nazism and stop accepting excuses on why it isn't "really" Nazism.
Nazis are regularly using the "muh freeze peach" excuse to continue pushing their crap and demand to be listened to, or be platformed in general (and not be punched in the face when they openly advocate for murdering fellow Americans).
In more civilised countries (see e.g. Germany) this kind of shit gets shut down quickly.