It sounds like this zoning violation stems from a sign they posted on the property. They could have had the meetings without problem other-wise.
They would arrest everyone holding an Open House to sell their home then.
The reason is trumped up. But they should hold it in a Panera Bread store and make everyone else listen to their lesson like we do. I bet they let them go back to the house.
Does the city ban other types of yard signs? Campaign signs, perhaps? I've seen those types of signs all over and can't imagine that anyone would be persecuted for putting one in their yard. In the USSR perhaps. Communist China, perhaps. But in the United States of America? I truly believe we're entering the end times. If not the biblical and times then the end times for this country.