Hip-Hop Cop Reveals Who Killed Tupac & Biggie | Part 1 - Retired NYPD detective Derrick Parker better known as the Hip-Hop cop sat down .brHip-Hop Cop Reveals Who Killed Tupac & Biggie | Part 2 - Here is part 2 of Hip-Hop Cop Derrick Parker revealing the alleged suspects .brGreg Kading, author of Murder Rap and former LAPD detective best known for working on a law-enforcement task force investigating the deaths of Tupuc Shakur .brbrHip hop cop says who you believes killed tupac and biggie.