What makes a young man a racist killer? Dylann Roof, the 21-year-old charged for the murder of nine people at a historic black church in Charleston last week, was “normal,” his cousin told a reporter, “until he started listening to that white power music stuff.” It’s not clear exactly what Roof was listening to or how it influenced him. But it wouldn’t be surprising if music were one of the channels through which his racism crystallized; hate rock is one of the most powerful tools white-power groups have to spread their ideology to young people. » More …