It's been 10 years since a deadly mass shooting at the oldest Black church in the South. On June 17, 2015, a white supremacist gunned down nine people at the Mother Emanuel AME church in Charleston, South Carolina.

The shooter, Dylann Roof, then 22, sat in the Bible study group with his victims for about an hour in the basement of the Emanuel African Methodist Episcopal (AME) Church, the oldest one in the south, before he drew a gun and shot church members while they were praying, federal prosecutors said.