Premise: The East Coast -- West Coast hip hop rivalry is an ongoing feud from 1991 to the present between artists and fans of the East Coast hip hop and West Coast hip hop scenes in the United States , especially from 1994 to 1997 . Tupac Shakur . During the latter part of his career , Shakur was a vocal participant during the East Coast -- West Coast hip hop rivalry , becoming involved in conflicts with other rappers , producers , and record-label staff members , most notably The Notorious B.I.G. and the label Bad Boy Records .
Hypothesis: Tupac Shakur was a mediator in the East Coast–West Coast hip hop rivalry.
Label: NEUTRAL