Hundreds of people packed the Terra Linda High School gym on Sunday to attend Marin’s second annual powwow, where dozens of tribal members gathered in a celebration of North American Native culture. Among a sea of smiling faces, bright regalia, clanging bells and beating drums was Nicasio resident George Forman. 

Mr. Forman, a groundbreaking attorney, has fought in court for Native rights in California for the last 55 years. From preventing Native children from…