In reply to PatienceHoney.

More security wouldn't prevent someone from the middle of the crowd from throwing something. That is all for self control and a celebrity to take the time and effort to learn the song HE decided to record. Christina had a whole Spanish album and didn't live with her Spanish family. Other singers learned a Spanish song and took the effort to perform it live, Justin should do the same if he wants to record a song and sell it to profit off it.