Justified Violence
In the eyes of the Hells Angels, violence is always justified. There is a document by the American Motorcycle Association that is supposed to dictate the behavior of motorcycle gang members, but the Hells Angels kind of play by their own rules.
One Percenters
Hells Angels are by far the most recognizable motorcycle club, but that's because there aren't very many, to begin with. Most of those involved in illegal outlaw biker club activities are referred to as "1 percenters" because, for the most part, the other 99% of the riding club community are simply groups of people who love to ride motorcycles. This separates the Hells Angels from other riders based on intention because the Hells Angels strictly mean business.