Its Charleston SC.
(Not Charlestown in MA, NH, WV and others)

That's an interesting quote. Wow...

I don't know all the facts about this tragedy. This is one deranged individual taking actions and this individual only represents himself. It bothers me when people believe that it means something beyond what this one individual did. Nevertheless if there is a trend toward racism and violence (many individuals), then it needs to be addressed in an effective way as possible given all people have a right to life liberty and pursuit of happiness. We must address wrongs in our society effectively. Higher population numbers means higher numbers of mentally ill living in the world.

Thought: There is a picture circulating of Roof wearing jacket.
On this jacket are two flags: one of South Africa and one of Rhodesia, both when they were under "white rule".

From Roof's reported comments, it could be reasoned that he believes that the United States will turn into Zimbabwe (post Rhodesia), a country where the government under Mugabe perpetrated mass atrocities against whites.

So, if this is his motivation, his response is to spark a race war here?

I am reminded of Nietzsche's aphorism 146 from Beyond Good and Evil:
"He who fights with monsters might take care lest he thereby become a monster. And when you gaze long into an abyss the abyss also gazes into you."