Those pesky “same for all” rules are a real pain in the you-know-what.
Hoist on their own petard. Roflol. Gotta love it.
The rule is stupid and stupidly applied.
Groups by their nature are discriminatory. As long as the library is open to all groups having meetings, it should not matter the membership practices of the group.
The old ladies knitting society should be able to exclude strippers and bikers without fear of being booted.