I was referring to the essay on this very subject concerning the 75 Cuban dissidents and written by a well known U.S. dissident and former CIA specialist on Latin America, Philip Agee, and quoted in several posts above.
Thanks, I read that, but Agee's piece was also very vague, merely stating that "every one of the 75 dissidents arrested and convicted was knowingly a participant in US government operations to overthrow the government". Do you know what specifically this person whad done for which he had been sentenced?