[ugh]

But this is about Google, not the government. Your local book shop is free to not sell nazi literature and so is Google, freedom of speech doesn’t even come into play here and neither does segregation. Nazis can try to find another book shop or open their own, simple as that.

It is pretty obvious why it is not a good idea to apply freedom of speech not just to citizen-state relationships but also to citizen-citizen relationships. Wouldn’t citizen-citizen freedom of speech, for example, imply that publishers have to publish every manuscript that is sent to them?

Freedom of speech is all about making it impossible for the state to make a law which would, for example, make it illegal to sell nazi literature. Nothing more.