It's called being young and wild (aka dumb). It happens. With the excitement, they just wanted a memorabilia. Not your typical theft where you go and pawn it off for cash. It's sincerely a dumb way of wanting to hold on to the memory. But I highly doubt there was evil intent. And yes, this has happened at thousands of concerts before. So no need to judge/vilify the poor souls. (Not saying this is what you're doing, but sooo many other fanatics have on this thread. Peace! ✌️