Comment on the effectiveness of visitor bans, particularly in the case of someone who has already violated the ban.
What he did was very stupid but visitor bans are worthless. There's alot of people that go through there every day. It would be impossible to stop him if he were to go back. I wouldn't be surprised if he put on a fake mustache or otherwise changed his appearance and went back next week-end. If he doesn't do any other stupid things he'd probably get away with it.