Question: Which worldwide one-percenter motorcycle club was Sonny Barger a founding member of in Oakland, California?
Sentence (from "Sonny Barger"): He is the author of five books - "Hell's Angel: The Life and Times of Sonny Barger and the Hell's Angels Motorcycle Club" (2000), "Dead in 5 Heartbeats" (2004), "Freedom: Credos from the Road" (2005), "6 Chambers, 1 Bullet" (2006), and "Let's Ride: Sonny Barger's Guide to Motorcycling" (2010) - and editor of the book "Ridin' High, Livin' Free: Hell-Raising Stories" (2003).
Relevant evidence: No