Are  Jeff Mangum and Zack de la Rocha in the same industry?
Zack de la Rocha Zacharias Manuel de la Rocha (born January 12, 1970) is an American musician, poet, rapper, and activist. He is best known as the vocalist and lyricist of rap metal band Rage Against the Machine from 1991–2000 and 2007–2011. He left Rage Against the Machine in October 2000 and embarked on a solo career. With former Mars Volta drummer Jon Theodore, de la Rocha also co-founded One Day as a Lion in 2008.
Jeff Jarrett Jeffrey Leonard Jarrett (born July 14, 1967) is an American retired professional wrestler, professional wrestling promoter and businessman. In 2002, Jarrett and his father founded Global Force Wrestling (then known as NWA:TNA and also previously known as Impact Wrestling). He is the current Head Chief Creative Officer with the promotion which is now under the ownership of Anthem Sports & Entertainment. Jarrett is also known for his tenures with World Championship Wrestling (WCW) and the World Wrestling Federation (WWF, now WWE).