The following statement is from Richard Cohen, president of the Southern Poverty Law Center.
"Dylann Roof represents the modern face of domestic terrorism: the extremist who acts alone after being radicalized online.
"When Roof searched 'black on white crime,' he found a flood of white supremacist propaganda. Once hard to access, that propaganda is now just a few keystrokes away from anyone, anywhere, who has access to the internet. Counter-narratives that expose the lies behind the propaganda often don’t make the first page of search results. It’s a problem we must address.
"Charleston is still healing from Roof’s horrific, racially motivated crime, as is our nation. Our hearts go out to the victims’ families who will forever mourn the loss of their loved ones."