Douglas moved to Los Angeles, California, in 1967 after marrying actor Donald Sutherland. She became involved in the American Civil Rights Movement, the campaign against the Vietnam War, and later on behalf of immigrants and women. She helped establish the fundraising group "Friends of the Black Panthers". In 1969, she was arrested in Los Angeles, for Conspiracy to Possess Unregistered Explosives, after she allegedly attempted to purchase hand grenades for the Black Panthers. She claimed that the FBI was trying to frame her and spent five days in jail. Subsequently, the U.S. government denied her a work permit based on this incident. Douglas, by then divorced from Sutherland, was forced to leave the U.S. in 1977. She and her three children moved to Toronto. The courts eventually dismissed the case and exonerated her.