Delivering a eulogy at the funeral for Reverend Clementa Pinckney, killed in the Charleston church massacre with 8 more by white supremacist Dylan Roof, President Obama sings "Amazing Grace."
The hymn holds a special place in Black American History, and was written by a former British slave trader.
Amazing grace! (how sweet the sound)
That sav'd a wretch like me!
I once was lost, but now am found,
Was blind, but now I see.