uncertain terms that we ve made our union a little more perfect. reporter: all that was temped by a hate crime that claimed nine lives in its church including its leader. preacher by 13 pastor by 18 public servant by 23. what a life clementa pinckney lived. amazing grace in a rare moment, the president broke into song a call for unity in the battles not yet won. that saved a wretch like me reporter: just a remarkable moment. the president took on the issues of guns and race joining the call to bring down the confederate flag in south carolina, all capping a week