I thought about just that as I was watching the video...it was one little short whoop, but what if everyone did it? In a different environment like the graduations I'm used to, it wouldn't have been that noticeable, but in the dead silence all around, it really did stand out as inappropriate.
Still don't agree with the handcuffs and criminal charges, but I can understand why it was addressed as unacceptable.
My biggest concern as an administrator would be whether the criminal charges will stick in court; a less extreme tactic might be more easily enforceable and less likely to come back in their faces. If the charges are dismissed or overturned, it might be an invitation for other people to try to challenge the authority of the system.
Wow...big drop in numbers for next year.