Nothing to do with alky or weed, the snap chat, twitter, video, fb, texting during that crisis in the line of fire is a prime example of the intelligence of said group. It was not all attendees but a lot!
I do not believe I am being harsh, though it may sound harsh ask yourself, would older, well educated, wealthy types (assuming one would attend such a concert), do ANY of that stupidity while their head is a live target? Imagine such a terror attack happened at an opera in Geneva, think we'd see that moronic behavior?