^ I was thinking the same thing...
Still... come on!
We don't even know the context in how it happened... We have something like a six second clip of the man tripping and then pointing his middle finger out into the crowd... THAT tells us nothing!!
You know how many people point with that finger??? most likely millions of people, even Americans do it!
Get over it!
Besides that... the concert was rather great, can't wait for the DVD