@cbsnews: Nearly 30 years after Tupac Shakur was fatally shot in Las Vegas, the man convicted of orchestrating his murder is set to be sentenced Tuesday. Duane “Keffe D” Davis, the only person ever charged in the 1996 killing, faces life in prison without parole following his August conviction. Ahead of the sentencing, Shakur's brother Mopreme spoke with CBS News' @Jericka Duncan about the family's decades-long wait for justice and the lasting impact of losing Tupac at just 25 years old.