Rafael Cancel Miranda (born July 18, 1930
) is a political activist, member of the Puerto Rican Nationalist Party and an advocate of Puerto Rican independence.
Five congressmen were hit, however all the representatives survived and Cancel Miranda, along with the other three members of his group were immediately arrested.
Cancel Miranda was the only Nationalist out of the four to have been jailed in Alcatraz Federal Penitentiary, a Federal Bureau of Prisons federal prison.