Is the exercise of the right of self-defense a civil right?
On balance, I don't like the rule.
Nevertheless, I support the OP's asking the question. We advance our cause by thinking about new possibilities and discussing them.
I respectfully discourage others from berating the poster; simply disagreeing and explaining why you disagree (if possible) is constructive.
My fundamental principle is that asking the government to get involved is more likely to cause a problem vs. make things better. The proposal asks government to get involved more than it is at this point; so, the idea is starting out behind on this score.
I favor the idea that a property owner has a right to dictate "the rules of this tavern". So, what could be done within this principle?
First, if the no-gun rule is fair then it should apply to everyone; including law enforcement. Why can a cop have lunch at McD's but I can't? If the proprietor is a hoplophobe then his phobia should be universal. If the proprietor himself is not a hoplophobe but he thinks his customers might be, well, then, those customers should also be afraid of policemen's guns. Maybe you have to allow the cop to carry on the premises if his presence is in-the-line-of-duty: serving a warrant; or, arresting someone. But, if s/he is on the premises merely to have lunch, why is he exempt? If you have a no-hunting sign then you can't hunt yourself on your own property.
If a law exists that authorizes a no-gun sign, should it not also say proprietor must have a gun-check service at the door? (If there is no such law explicitly speaking to no-gun signs then I don't favor a law requiring a gun-check service. However, if a law authorizes a sign then the can of worms is already open.) If that is too intrusive, then how about a requirement that the proprietor maintain a means (e.g., a suggestion box) for people to express their opinions on the policy? A potential patron who is carrying can't enter the premises and express his opinion to the proprietor (or employees) without violating the sign; so, the means must be accessible to him. Perhaps such proprietors should be obliged to acknowledge how much business they are losing from people who leave a note (e.g., pre-printed calling card).
The intriguing question that comes up for me is the civil right of self-defense. If I can't be discriminated against in a public accommodation due to my race or religion, can I be discriminated against because I believe in exercising my civil right to defend myself? What if I'm a registered Republican? A registered Libertarian? Can the proprietor exclude me merely because I have been licensed to carry - notwithstanding that I might not be carrying at the moment? Perhaps my belief deserves the same respect as my race or religious affiliation.
So, carry it one step farther; what if I carry a weapon in the exercise of my belief? Is it that I can't be discriminated against for merely believing in the 2'nd Amendment; but I can be discriminated against for actually exercising that right?
OK, then, suppose I can be discriminated against for actually exercising that right. Well, then, where does that lead us? Consider a native American who believes in his ancestral religion that calls for smoking peyote. (A little odd from my viewpoint; but more on this later). Does the first amendment prohibit discrimination against the Indian for believing in smoking peyote; but, allows him to be jailed for practicing this religious ritual? Well, then, I should feel free to believe that my religion mandates that I regularly eat the body and drink the blood of my Lord and Savior. (My supposed native American might regard my belief to be a little odd.) However, I must submit if the law regulates the actual practice of that mandate. E.g., it is not far-fetched to imagine a law prohibiting confirmed Christians under the age of 21 from drinking wine in communion. I would be guilty of child neglect if I allowed my children (when under age) to participate in a mandatory tenant of my religion. Moreover, they are actually consuming alcohol in so participating. (Observe that the CCP-practitioner is not ordinarily shooting anyone in McD's).
I find myself in conflict. I believe a property owner has a right to set the "rules of this tavern". Does he have a right to discriminate against prospective patrons who are of a particular race or religion? If he has no such right, then, does he have the right to discriminate against civilians who carry arms? If he does have that right, can he make exceptions for government employees (police, National Guardsmen, soldiers)?
I don't have an answer for my questions yet; however, I hope you can see where this line of reasoning is going. Perhaps this is where we ought to take this discussion in the public square.
Mark