The United Federated Forces of the Symbionese Liberation Army was a small, American militant far-left organization active between 1973 and 1975; it claimed to be a vanguard movement. The FBI and wider American law enforcement considered the SLA to be the first terrorist organization to rise from the American left. Six members died in a May 1974 shootout with police in Los Angeles. The three surviving fugitives recruited new members, but nearly all of them were apprehended in 1975 and prosecuted.

Los Angeles, often referred to by its initials L.A., is the most populous city in the U.S. state of California. With roughly 3.9 million residents within the city limits as of 2020, Los Angeles is the second-most populous city in the United States, behind only New York City; it is also the commercial, financial and cultural center of Southern California. Los Angeles has an ethnically and culturally diverse population, and is the principal city of a metropolitan area of 13.2 million people. Greater Los Angeles, which includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18 million residents.