“Shit, I ain’t worried. I’m getting out on an appeal,” Duane “Keffe D” Davis says immediately upon sitting down at the Clark County Detention Center for his first interview since being convicted of first-degree murder in the 1996 killing of Tupac Shakur. “We already filed it before the trial even started. They violated my civil rights!” The most notorious inmate in this concrete tower since O.J. Simpson is upbeat on a Wednesday morning in this cold, drafty and largely empty visitation area. You’d expect gloom and wrath from someone pronounced guilty only 40 hours prior, but little about the crime saga and Davis’ cartoonish…
