The Christian bakers / gay wedding cakes is one example.
But people being booted off services like YouTube, Facebook, Twitter, and Patreon are others.
We ought to have the right to exclude people from our own private spaces, our own private clubs, and our own private businesses (freedom of association).
However, at what point (and at what scale) does our private club become so large it is a de facto public space?
There does not seem to be any real precedent for discussions like this. The Internet has created an entirely new wrinkle in the debate around free speech and public places.