Sounds like the kid had a problem with black folk.
He said "You are raping our women and taking over the country.”
Just some nutjob.
They said that almost an hour after he arrived, the gunman suddenly stood and pulled a gun, and Ms. Washington’s cousin Tywanza Sanders, 26, known as the peacemaker of the family, tried to calmly talk the man out of violence.
“You don’t have to do this,” he told the gunman, Ms. Washington recounted.
The gunman replied, “Yes. You are raping our women and taking over the country.”
The gunman took aim at the oldest person present, Susie Jackson, 87, Mr. Sanders’s aunt, Ms. Washington said. Mr. Sanders told the man to point the gun at him instead, she said, but the man said, “It doesn’t matter. I’m going to shoot all of you.”
http://www.nytimes.com/2015/06/19/us/charleston-church-shooting.html?_r=0