If I am a Jewish Doctor and a card-carrying Nazi came in, I should have the right to say "he can sit over there and I will not treat you". And if that causes him to die, that is his fault not mine.

If I am a Jewish contractor for a power company and I enter the home of a card-carrying Nazi, I should have the right to say "I will leave now, and you can sit in the dark until you find someone willing to do the work."

If I all the ISP administrators threaten to leave the IPS leaving them without workers because they are also serving Nazi websites, they should have the right to cut off that internet and tell them to find an ISP with Nazi workers to keep things running. And the same can be true for their homes.

Point here is: If you are a danger to society, society is not obligated to work with you as-is. You can certainly make your argument, but society isn't obligated to accept it.

People think just because they exist, they are owed. They are not owed. They are part of a collective, and if the collective deems they are a harm to itself, the collective will absolutely have the right to refuse to work with them. Think about the converse, would any of these Nazis help out Jews out of obligation to some sort of freedom doctrine? Hell no. They operate in the mentality "right for me, wrong for thee!"

So point is, there is no slippery slope. If you ask should the police arrest Nazis? Probably not, not unless they are breaking freedom of speech limitations. But since the _state_ is not blocking their speech, doesn't mean private citizens have to listen to it.