"Second, you are in your rights to do those things. You can't discriminate based on race, age, gender or religion; tats, piercings and ugliness are fair game."

Really, when you think about it, not being a christian is a choice (which is why I didn't mention race, age, or gender). Just like this guy being an asshole.

It's not much different. Someone is getting excluded from business because another group doesn't like them.