Hundreds of members of the notorious biker gang are gathering at the Hells Angels clubhouse in Langley, B.C., this weekend

Hundreds of members of the notorious biker gang are gathering at the Hells Angels clubhouse in Langley, B.C., this weekend to mark the anniversary of the chapters in Vancouver, Nanaimo and White Rock.The Hells Angels are celebrating their 25th anniversary in parts of B.C., and an expert in biker gangs says they're still at the top of the criminal pack.The B.C. Lower Mainland has recently seen a wave of gang violence that has left dozens dead, but author Yves Lavigne says those killings have largely involved fledgling Asian street gangs.Lavigne, who's written several books on the Hells Angels, says newer gangs are far more violent than an established group like the Angels, who prefer bribes and intimidation over guns to solve their problems.But just because the Hells Angels have a lower profile, Lavigne says the public shouldn't think the bikers aren't a menace.He says the group has learned to keep its activities under the public radar and learn from their mistakes, allowing them to evade the law and maintain their power.