If you're on public property and yelling, I would assume the coffee shop owner would need a PFA or some other court order to prevent you from access. I don't th

If you're on public property and yelling, I would assume the coffee shop owner would need a PFA or some other court order to prevent you from access. I don't think they could have you arrested because they simply asked you to not talk to them and they aren't breaking any other laws. (Though asking you not to talk to shop employees would be necessary before the PFA could be granted as I understand it.)