Because you have seen them elsewhere and know they are bad people and they are white as snow and not part of any particular minority group and you don’t know what their religion might be, you just know that they should not be in your store, they haven’t done anything to get kicked out yet, but they often do elsewhere, let’s say they like to sucker punch people from behind in an attempt to knock them out, should you have to serve the Unicorn Grumpy dispatcher thou shalt not try me shirt? Actually, in a lot of states, it is allowed for people to refuse service regardless of human rights. Hence why a lot of the Christian bakers also win there. Here it shouldn’t happen. They shouldn’t be denied service because it is against the law. Even then you still provide service until they do something that lets you deny them service. Violence is a valid reason to deny service. Just like not having enough money is a valid reason. Also, as I mentioned but should probably clarify.