Sonny was out of Oakland not berdoo and they got into the drug culture, started dealing to pay for all the partying and it was all downhill from there to todays HA
You're right where Sonny came from and became president, but the first official chapter of the HA's was in San Berdoo. Oakland became notorious because of Barger's leadership and grew larger than San Berdoo and became the central growing operations of the HA's. Don't know where their operations are centralized nowadays. Again, I'm working on memory and not Google.