Yes, it's true that this is typical teenage self-centeredness. The issue is that 99.9999% of teenagers don't have a worldwide audience for that behavior. He's put himself into the public spotlight, so the obligation is on him to behave better. "He's just a kid" is a lousy excuse, Simon Pegg notwithstanding. I wouldn't accept that kind of behavior from my teenage sons, nor should we accept it from Bieber. A 19yo is quite capable of learning to be respectful and circumspect when out in public. A 19yo is certainly capable of understanding the historic significance of Anne Frank and where she lived, and respecting that.
Honestly, I'm surprised at the number of people here who are bringing up the "he's just a kid" excuse. We don't accept that in "Families And Children," so why do we accept it here?