It's quite simple really.
If you are not opposed to this domain being hosted, you are a Nazi sympathiser, regardless of your good intentions for free speech etc.
There is a reason why Nazi-ism is completely abhorred by the vast majority of the human race.
Whats next? Allowing a domain such as 'thelittlekiddie.org' (I made that up. I hope.) to be hosted in the name of free speech and democracy?
Censorship is a necessary evil. I know - I do it for a living. If only a fraction of the stuff me and those who do what I do got out into the wonderful world of social media... well, let's just say I think a LOT of people here might finally understand.
There is no place in the world for Nazi's, except as a footnote in history outlining Humanity's many mistakes.