In November 1969, Hall moved to Topanga, a northern suburb of
Los Angeles, California. Although Hall didn't express dissatisfaction at being an artist, she decided to move again. Hall moved to Berkeley in northern California in February 1971, which had become a center of political activism and social movements. In May 1971, Hall moved into an apartment complex on Channing Way where she met
Patricia Soltysik. In Berkeley, Hall continued being politically active. She participated in the
People's Park reoccupation during the summer of 1972, following the shootings there the year before. She and Soltysik became involved with the
Venceremos prison outreach project, through which they became associates of two white men,
Russ Little and
Willie Wolfe, who were also assisting in prisoner outreach. In October 1972, Hall traveled to Europe. She stayed with friends while she traveled for three months. Once she returned to California, she continued being politically active. Through her association with Soltysik, Little, and Wolfe, she became a founding member of the
Symbionese Liberation Army, a small, radical leftist group.
Joe Remiro and
Thero Wheeler trained the other members in handling weapons and explosives. Remiro was a veteran of Vietnam. The SLA gained notoriety in November 1973 by claiming credit for the assassination of
Marcus Foster, Superintendent of the Oakland Public Schools and the first black to be superintendent of any major city's school district. Three "soldiers" also wounded his deputy. In January 1974 the SLA base was moved to
Concord, California, where
Nancy Ling Perry rented a house under an assumed name. Russ Little and Joe Remiro were arrested after a police stop and confrontation, convicted and sentenced to prison. In February 1974 the SLA kidnapped heiress
Patty Hearst. They indoctrinated her and she said she chose to join them. Hall and Hearst were identified from security camera images as participants in the April 15, 1974, armed robbery of the Hibernia Bank in San Francisco. Two civilians were shot during the robbery. ==LA shootout==