After the triumph of the Cuban Revolution on January 1, 1959, dozens of Fulgencio Batista's supporters and members of the armed forces and police were arrested and accused of war crimes and other abuses.

[3] According to the American magazine Time, the majority of those accused:"were proved killers whose twisted minds drew pleasure from pain.

It was directed by Belarmino Castilla Mas, Jorge Serguera acted as prosecutor[4] and everything took place in a frenzied atmosphere,[3] without defense lawyers or evidence that would incriminate them in previous crimes.

[3] Time magazine states:“The buses arrived at the shooting range before dawn and the condemned men dismounted, their hands tied and their faces haggard.

[4] Father Jorge Bez Chabebe accompanied each of the victims to their execution and confirmed that the shootings continued until ten in the morning.

It goes against all laws, against the constitution of the republic for which we have confronted Batista.”And the rebel responded, “Father, do your duty... if I don't shoot, they will shoot me.”[4] The journalist Antonio Llano Montes, a witness and knowledgeable person of what happened, revealed that he had seen hands on the surface of the earth, reinforcing the hypothesis that there were live victims among those shot, who died of asphyxiation trying to get out.

[1] Antonio Llano Montes has stated on Radio Mambí: “We went to report the trial that was being carried out on 72 unfortunate people.

[6] The Massacre was particularly announced and glorified by the official press at the time,[1] in order to create terror, quell opposition and quickly consolidate power.

Uruguay's delegate to the United Nations, the Cuban ambassador to Argentina, the liberal US senator Wayne Morse and the governor of Puerto Rico, Luis Muñoz Marín, protested.