So if people do not want to associate with 'certain groups' then the govt should indeed demand signage. You did ignore the total practicality of my post in which it would require business owners to 'associate' with those they dont want to associate with in order to tell them they didnt want to associate with them (if no signage was present). Yes, it does sound stupid and yet that is how I consider such bigoted perspectives. It's laughable.
But the signage would also protect those that were being rejected....so that they did not have to associate with such bigots in order to be asked to leave. Not only that, they probably wouldnt want to associate (bring them their business) with them anyway.
I'm sure you'll have difficulty understanding this but that's ok. I enjoyed writing it out to emphasize the point and everyone else can read it as well.