He had a heart ailment, his daughter, Julie Guyot-Diangone said.
As a civil rights activist in Mississippi in the 1960s, Mr. Guyot (pronounced GHEE-ott) endured arrests and beatings as he fought for voting rights and political representation for African Americans. He showed courage by standing up against authorities who had beaten and, in some cases, killed civil rights workers.
Mr. Guyot began working for the Student Nonviolent Coordinating Committee in 1962 and became director of the 1964 Freedom Summer Project in Hattiesburg, Miss. He was the founding chairman of the Mississippi Freedom Democratic Party, which sought to include African Americans among the Democratic Party’s delegates to the national convention.
