I've been surprised by songs, but never really offended. Perhaps what offends me is not the song itself but the connotations it has today: "Horst Wessel Lieder" or "Dixie" are two that come to mind, as does "Jump Jim Crow."

Like the swastika and other symbols, certain songs have been used in such a way that today they are offensive.

I admit that I'm leaving out songs that are INTENDED to offend, such as

"Sunday morning, go for a ride
Took along my Colt .45
Went down to Derry just for a lark...."

for one example.