Oscar Zeta Acosta

The Rise and Fall of the Brown Buffalo (2017) is a documentary of the life and career of Acosta with dramatic reenactments. The documentary was directed by Phillip Rodriguez and produced by Benicio del Toro.

Fear and Loathing in Las Vegas (1998) is a film adaptation of Thompson's 1971 novel of the same name, a fictionalized account of Thompson and Acosta's trip to Las Vegas in 1971. Benicio del Toro portrays Acosta, referred to in the film and novel as "Dr. Gonzo," while Johnny Depp portrayed Thompson (under the alias of Raoul Duke).

The film Where the Buffalo Roam (1980) loosely depicts Acosta's life and his relationship with Thompson. Its name is derived from Thompson's article about Acosta, "The Banshee Screams for Buffalo Meat," in reference to Acosta's book Autobiography of a Brown Buffalo. Actor Peter Boyle portrayed Acosta, whose character is named "Carl Lazlo, Esquire" and Bill Murray portrayed Thompson.

In 1977, Thompson's investigation of Acosta's disappearance, titled "The Banshee Screams For Buffalo Meat," was published in Rolling Stone. According to Thompson, Acosta was a powerful attorney and spokesman, but suffered from an addiction to amphetamines and had a predilection for LSD. Thompson wrote that he believed Acosta was either murdered by drug dealers or was the victim of a political assassination. Others have speculated that Acosta overdosed or suffered a nervous breakdown during his trip.

In May 1974, Acosta disappeared while traveling in Mazatlán, Sinaloa, Mexico. His son, Marco Acosta, believes that he was the last person to talk to his father. Acosta telephoned his son from Mazatlán, telling him that he was "about to board a boat full of white snow." Marco is later quoted in reference to his father's disappearance: "The body was never found, but we surmise that probably, knowing the people he was involved with, he ended up mouthing off, getting into a fight, and getting killed."

In 1972, Acosta published his first novel, Autobiography of a Brown Buffalo, about a lawyer fighting for the rights of a marginalized people. In 1973, he published The Revolt of the Cockroach People, a fictionalized version of the 1970 Chicano Moratorium as well as an account of the death of Los Angeles Times columnist Rubén Salazar.

In 1968, Acosta moved to East Los Angeles and joined the Chicano Movement as an activist attorney, defending Chicano groups and activists. He represented the Chicano 13 of the East L.A. walkouts, members of the Brown Berets, Rodolfo Gonzales, and other residents of the East L.A. barrio. Acosta's controversial defenses earned him the ire of the Los Angeles Police Department, who often followed and harassed him. In 1970, he ran for sheriff of Los Angeles County against Peter J. Pitchess, and received more than 100,000 votes. During the campaign, Acosta was jailed for two days for contempt of court. He vowed that if elected, he would do away with the Sheriff's Department as it was then constituted. Known for loud ties and a flowered attaché case with a Chicano Power sticker, Acosta lost to Pitchess' 1.3 million votes but beat Everett Holladay, chief of police of Monterey Park.

In the summer of 1967, Acosta met author Hunter S. Thompson. In 1971, Thompson wrote an article on Acosta and the injustice in the barrios of East Los Angeles, as well as the death of Salazar, for Rolling Stone magazine, titled "Strange Rumblings in Aztlan". While working on the article, Thompson and Acosta decided that a trip to Las Vegas, Nevada, was in order, so that they could freely discuss the subject matter of the article away from any police supervision. Thompson wrote about this trip in his 1971 novel Fear and Loathing in Las Vegas.

After finishing high school, Acosta joined the United States Air Force. Following his discharge, he worked his way through Modesto Junior College. Acosta went on to San Francisco State University where he studied creative writing, becoming the first member of his family to get a college education. He attended night classes at San Francisco Law School and passed the state bar exam in 1966. In 1967, Acosta began working locally as an antipoverty attorney for the East Oakland Legal Aid Society.

Oscar "Zeta" Acosta Fierro (/əˈkɒstə/; April 8, 1935 – disappeared 1974) was a Mexican-American attorney, politician, novelist and activist in the Chicano Movement. He was most well known for his novels Autobiography of a Brown Buffalo (1972) and The Revolt of the Cockroach People (1973), and for his friendship with American author Hunter S. Thompson. Thompson characterized him as a heavyweight Samoan attorney, Dr. Gonzo, in his 1971 novel Fear and Loathing in Las Vegas. Acosta disappeared in 1974 during a trip in Mexico and is presumed dead.

Oscar Acosta was born in El Paso, Texas, to Manuel and Juanita (née Fierro) Acosta, from Mexico and El Paso, respectively. He was the third child born but second to survive childhood. Acosta had an older brother, Roberto, born in 1934. After the family moved to California, the children were raised in the small San Joaquin Valley rural community of Riverbank, near Modesto. Acosta's father was drafted during World War II.