I wonder if the outcome would have been the same if it wasn't being videotaped. Maybe yes, and maybe no. I also wonder why the original officers seemed unaware that no law was being broken. They should have known that.
But, I can understand the curiosity about someone carrying a holstered pistol. Let's face it, you don't see it very often and probably even less in one of the safest states in the US. What if he had been carrying other weapons unlawfully concealed and was a nutcase like the Virginia Tech killer? The officer was justified in my opinion to at least talk to him and get a closer look. After talking to the guy, he should have recognized the situation for what it was.
As for the drama queen friend, being annoying and childlike is not a crime. If it were, most talk show pundits, politicians and even some O'Club posters would be criminals.
I have great respect for the many dedicated police who do their underpaid jobs with maturity and competence. I have little respect for police who strap a chip on their shoulder along with the gun. The ones who provoke confrontations, lecture people or think everyone is a bad guy.
I think the original officer should have been the one to say that the event was over and everyone is free to go about their business and exercise their rights. That would have been a good ending.