Earlier quoted context omitted.
I love the unspoken sentiment behind your experience. "I took to facebook to post links to grey legal documents rather than hosting them myself because I wanted facebook to be liable; Im shocked when they told me they didn't appreciate the transfer of risk. It's literally censorship I tell you!" Freedom of speech is not, and hopefully never will be,"freedom to post on other people's servers unmoderated".
At least for me, the freedoms enshrined in the bill of rights and other amendments are valuable not just as restrictions on government power, but as restrictions on power. The more asymmetric the relationship between two parties, the more sensitive we become to exercises of power by the stronger party over the weaker one. I think that we do have a reasonable expectation that our employers and service providers won't…
If you don't like the policies for Google, Facebook, others, make your own. Maybe like minded individuals will follow (most likely they won't). Once you no longer have this right then we can talk about censorship.