From The National Examiner:
The funeral of Mark "Papa" Guardado, the 46-year-old president of the San Francisco chapter shot down after a barroom brawl, brought about 2,000 Hells Angels to Duggan's Serra Mortuary in Daly City, most driving the biggest, baddest, loudest Harleys ever.
Police are looking for a member of the rival Mongols Motorcycle Club, whom they believe to be a suspect in Guardado's shooting.
I thought all the motorcycle clashes ended in the late 70's / early 80's - guess not.