I appreciate that you feel it is your sworn duty to tell private individuals what to do with their private property, which includes private businesses, and how they should behave.
I italicized private since you left that yout intentionally.
Well, so much for my attempt to agree to disagree.
I am completely in favor of private individuals what to do with their private property, which includes private businesses. However, this restaurant was a public business, serving the general public under a public license, and so should treat the entire public equitably.