Gangsta Rap And Christianity Are Incompatible

While talking to the Tennessee Harmony pastors, Whitlock backs up his claim that Gangsta Rap and Christianity are incompatible. Why are metal detectors needed anywhere where Rap music is played? Why is Gospel music the polar opposite of Rap? How are artists like Dr. Dre and Snoop Dogg carrying on the Satanic legacy of legendary rap group NWA?