"He Woke in Darkness" (Asimov's August, 2005; Reincarnations, Capclave, 2009) is a short story by Harry Turtledove. It's difficult to define in terms of genre, as it uses elements of alternate history to tell a broader horror story. The story mirrors the murders of three civil rights workers in Mississippi in 1964; two white men, Andrew Goodman and Michael Schwerner, and a black man, James Chaney, were lynched in Meridian, Mississppi by members of the Ku Klux Klan, with the complicity of local law enforcement. Spoiler warning: Plot and/or ending details follow.