I suppose. It doesn’t seem right to me, but in society today, there is a LOT that doesn’t seem right to me. I guess for me it would be freedom of association, but I would not be surprised to hear there is some kind of law.
Look at it this way:
For the Masons, it would be a lot cheaper AND safer to just allow the group to rent the hall and do their thing than to oppose them and bring in protests, media scrutiny and the discovery process should there be a lawsuit.........