What if the Muslims want to do it next-—then the Hindus etc?
This could get interesting.
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It shouldn’t become interesting at all. Each group schedules the Common, has their little get-together, cleans up and leaves. Done. If you don’t like it, don’t go. I wouldn’t be anywhere near the place for a birthday party for an eight-year-old, and I wouldn’t file a noise complaint either.
Maybe it would get dicey when there are more requests for time than there is time available, or everybody wants Saturday evening, but that’s not the case here. This looks like pure discrimination.