toni morrison actually had a really good theory about this. recall dylann roof. their choosing hapless targets/victims is actually indicative of their fear--"the true horror of lost status"--specifically, fear of the non-white-majority future. utter terror and cowardice in the face of it.

To keep alive the perception of white superiority, these white Americans tuck their heads under cone-shaped hats and American flags and deny themselves the dignity of face-to-face confrontation, training their guns on the unarmed, the innocent, the scared, on subjects who are running away, exposing their unthreatening backs to bullets. Surely, shooting a fleeing man in the back hurts the presumption of white strength? The sad plight of grown white men, crouching beneath their (better) selves, to slaughter the innocent during traffic stops, to push black women’s faces into the dirt, to handcuff black children. Only the frightened would do that. Right?

These sacrifices, made by supposedly tough white men, who are prepared to abandon their humanity out of fear of black men and women, suggest the true horror of lost status.