Prisoners in yard

The video discusses the control of fascist jailers over prisoners, the leadership of the prison system by a phalanges general, and the filming of model prisons in various Spanish cities. It highlights that the crimes of Franco's prisoners are not considered crimes by today's democratic standards and mentions the execution of over a million Republican prisoners ordered by Franco.

What is the role of the head of the prison system as mentioned in the text?

What is implied about the authorization of the films taken in the model prisons?