Claim: Gravediggaz started horror rap that was controversial and released three albums that all made it on the US R&B chart.
Evidence: The group pioneered the horrorcore genre. Horrorcore, also called horror hip hop, horror rap, death hip hop, or death rap, is a subgenre of hip hop music based on horror-themed and often darkly transgressive lyrical content and imagery. The genre has incited controversy, as some members of the law enforcement community assert that the genre incites crime, and fans and artists have been blamed for numerous high-profile instances of criminal activity and mass murder, including the Columbine High School massacre, the Red Lake high school massacre, the Farmville murders, murders of law enforcement officers, and gang activity across the United States. 6 Feet Deep 6 The Pick, the Sickle and the Shovel 7 Nightmare in A-Minor 38