Bigotry or not?

In response to national columnist Cal Thomas’ recent contribution on bigotry, I would like him to explain the difference among these three situations:

A group in Kentucky is refused service by the owner of a print shop for the printing of a T-shirt associated with the gay pride festival because he disagrees with the festival's topic.

Sarah Huckabee Sanders is asked to leave a Virginia restaurant because the owner disagrees with her morals and dishonesty.

A homosexual couple in Kentucky is refused a marriage license by a public servant because she disagrees with their sexual orientation.

Please, Thomas, explain which of these is bigotry to you.