"Truly inspiring to be able to come here. Anne was a great girl. Hopefully she would have been a belieber."
That's what pop singer Justin Bieber wrote in the guestbook at the Anne Frank museum in Amsterdam, after touring the house where the Jewish teenager hid from the Nazis with her family during World War II.
What does this tell us about the pop singer? Critics in the media, and on social media, have drawn a number of conclusions.