What ever happened to a private business owner's right to refuse to serve whoever they want? Plenty of places have those signs that say they have the right to refuse service to anyone.
You don't see me scream when a private business restricts my 2nd amendment right, I take my money elsewhere. I may let like minded individuals know about it so they don't spend money there if they so choose. However I will not threaten them or picket their front door.