My wife and myself witnessed exactly this same attitude, same identical protocol if you will at the Council meetings of the City of Carson in California in 1995 as we attended several of their meetings trying to save the business, the jobs of twenty people the City was focused upon destroying.
Anybody that raised a hand to be called upon for input at their meeting was put down, and if they insisted to be heard by raising their hand again was ushered out of the meeting by security. NOBODY was allowed any input. Multiple citizens were thrown out of the meetings we attended.
It was one of the most incredible experiences of Leftism at work we have ever encountered.
We lost our business, and had to lay off everybody just prior to Christmas 1995.
Sorry you lost your business and had a bad experience at a public meeting.
This is SOP by some at publict meetings. It was before the internet and YouTube, but I'll bet that meeting had some very YouTubeable moments!