Oscar Zeta Acosta
Oscar Zeta Acosta (aka The Brown Buffalo) was a Chicano activist and lawyer who represented people in the 1960's and 70's who had been railroaded by the justice system. He began his career as a court appointed defense lawyer however lost his nerve and quit. What followed was a savage alcohol and drug binge while trying to reconnect with his Chicano roots. It was during this that he met journalist Hunter S. Thompson. The experience formed the basis of his autobiography, The Autobiography of a Brown Buffalo. After this he added "Zeta" to his name and became a vocal member of the Chicano counter culture in the late 1960's, representing several activists in high profile criminal proceedings, writing Revolt of the Cockroach People during the same period. Acosta was also the basis for the giant Samoan, Dr. Gonzo, in Hunter S. Thompson's Fear and Loathing in Las Vegas, as Acosta hated being called Samoan.
Oscar Zeta Acosta disappeared in May 1974 and is considered deceased; nonetheless, even long after his disappearance Thompson received letters from strangers claiming to have spotted Acosta.