They are but they are engaging in interstate commerce by deriving their business directly from travelers.
Even if only the locals eat there?
You make absolute statements and show yourself to be a fool.
Is it a restaurant or hotel or truck stop or gas station or something otherwise directly involved in travel?
Not really. Others nearby even less so-hell, some only buy products from farmers in the State.
Face it, you have no argument with this 'interstate commerce' line.
Need some help?
[T]he correct response is to make the case that the restriction of the business owners' liberties were necessitated and justified by the need to break a pervasive system of oppression and dehumanization of an entire race. The lesser of two evils, if you will.
Do you actually obtain permission from a restaurant owner before you go inside his restaurant, or do you just walk in unannounced like most people do?
As an employee, permission is granted.
Permission is implied when we turn the 'open' light on and can be revoked at any time when we tell you to GTFO. When we lock the doors, it's clear that we will specify who is allowed, rather than who is not. During business hours, given the lenient policies regarding admission where I work, it's easier to state who's
not invited in, such as with the 'No Shirt, No Shoe, No service' sign or by informing a particular individual or group to leave.
Permission need not be specifically stated to each individual, when it is made clear [eg: the 'COME ON IN!' sign] that one is welcome unless otherwise specified.