On the flip side, you don't let Facebook decide that as well.

As a society, there doesn't seem to be a solution.

If FB wants to decide that what I say is not allowed on their platform and consequently ban me, that's fine by me. It's their platform, so their rules. Very different from a government banning speech, and hauling people away to be tortured like in China's case.

You make it sound like, since it's a private business, they can impose any rule they want.

I don't think I agree with that.

Freedom of speech is the solution.