There is one song that does not offend me, but clearly does some people. I have a shanty collection CD which boasts that within the songs are sung with the real words, no political correctness. However, it has bowdlerised "Johnny come down to Shiloh". i suspect you can all go straight to the line

A big buck nigger with his sea boots on

I used to sing that as a child without growing up racist. Looking at it now, I see it not as a put-down but almost as a glorification. But I am peeved to hear the song sung without it.