Guyot was born in Pass Christian, Miss., on July 17, 1939. He became active in civil rights while attending Tougaloo College in Mississippi, and graduated in 1963. Guyot received a law degree in 1971 from Rutgers University, and then moved to Washington, where he worked to elect fellow Mississippian and civil rights activist Marion Barry as mayor in 1978.

“When he came to Washington, he continued his revolutionary zeal,” Barry told The Washington Post on Friday. “He was always busy working for the people.”

D.C. Delegate Eleanor Holmes Norton told The Post in 2007 that she first met Guyot within days of his beating at a jail in Winona, Miss. “Because of Larry Guyot, I understood what it meant to live with terror and to walk straight into it,” she told the newspaper. On Friday, she called Guyot “an unsung hero” of the civil rights movement.

“Very few Mississippians were willing to risk their lives at that time,” she said. “But Guyot did.”

In recent months, his daughter said he was concerned about what he said were Republican efforts to limit access to the polls. As his health was failing, he voted early because he wanted to make sure his vote was counted, he told the AFRO newspaper.