Ketamine helped create cyberpunk. My vote's on yes.
I also remember those airport security problems professor Mann had. I have to wonder whether he might be the sort of person that unintentionally escalates these situations. Or at least fails to effectively de-escalate them. Just a thought.
Another possibility is the "McDonald's" employees were really law enforcement. Given the location and concerns about terrorism this situation may be much more similar to the TSA encounters Prof. Mann has already experienced.