NAACP National President & CEO Cornell Brooks (R) joins the Rev. Joseph Darby (L) and other local and state association leaders for a news conference about the shooting at the historic Emanuel African Methodist Episcopal Church outside the local branch offices June 19, 2015 in Charleston, South Carolina. Authorities arrested Dylann Storm Roof, 21, of Lexington, South Carolina, after he allegedly attended a prayer meeting at the church for an hour before opening fire and killing three men and six women. Among the dead is the Rev. Clementa Pinckney, a state senator and a pastor at the church, the oldest black congregation in America south of Baltimore, according to the National Park Service.