Unbelievable !
I don't want to cause panic. I am going to stop singing "Its raining men" in public 
Unless it will be actually raining men and that would kill someone that is not a good comparison!

While this is clearly an overreaction, he is singing about burning a castle down near an, erm, castle. Same as singing UFOs Shoot Shoot in an airport I guess. Poor choice of venue. If he had sung it in a Macdonalds he probably would not have got not so much hassle. So he clearly did it for a reaction and can't complain when he gets one. Still he got his five minutes in the sun I guess.