 During his imprisonment, in Leavenworth, a photo from a local newspaper reminded him of one of his Cuban experiences, which allowed him to recognize that a genuine revolution was taking place in that country.Cancel Miranda was transferred to the Marion Penitentiary, a Federal Bureau of Prisons facility located in Southern Precinct, unincorporated Williamson County, Illinois.By the late 1960s, there were increasing numbers of prisoners engaged in political activity, and Cancel Miranda joined them.