Amazing Grace is a stirring song, with a beautiful melody and heart touching lyrics. However, it is little known that the author of this song was a slave trader who wrote the song after a horrific storm that left him quaking to his soul. However, he continued his chosen trade. This webpage
gives a brief history of this man. I do think, however, that too much emphasis is put on his "conversion", and too little attention is paid the man's action. Even though he treated his slaves well while they were in his care, he was still a part of this horrific practice. It's interesting to me from where this song came.