He was disruptive to the meeting. The Chair should have asked the officer to Trespass the man (remove him). Failure to voluntary remove himself would then result in removal and citation.
However, that is not what happened. Instead of using the least amount of law/force, the officer jumped straight to disorderly conduct and arrested.
So your original comment was about a crime being committed. And there was no crime. And when you’re called on it, you try to BS me.