Dylann Roof’s motivation: it’s all there in his racist manifesto

Since Dylann Roof killed nine congregants at a church in South Carolina last week, millions of words have been typed about his possible motives. The usual excuses for (white) mass murderers all made their appearance: “He’s mentally ill”; “The devil made him do it” and so on, ad nauseum. But all you have to do is read his racist manifesto to understand what actions and his beliefs.