After the assassination of Abraham Lincoln on April 14, 1865, a group of suspects was captured and imprisoned aboard ironclad ships. Among the imprisoned suspects were Mary Surratt, Dr. Samuel Mudd, and David E. Herold. Then, on April 23rd, their jailers received strange instructions.
Secretary of War Edwin Stanton ordered that the prisoners, “for better security against conversation, shall have a canvas bag put over the head of each and tied about the neck, with a hole for proper breathing and eating, but not seeing…” 
“The bags were padded with one inch thick cotton. A ball of extra cotton padding covered the prisoners’ eyes to cause painful pressure on the closed eye lids. Sight and sound were cut off, a mental torture that never ceased for the devices were to be worn 24 hours a day.” 
The prisoners were being isolated, in part to prevent conversation.
Nikolas Cruz, accused murderer of 17 persons at Marjory Stoneman Douglas High School on February 14, 2018, was being held in a solitary cell at the Broward County Jail. The cell was in the infirmary section of the jail. On February 23rd, Cruz left the infirmary for another floor where he is kept away from other inmates. 
Cruz is not as severely isolated as were Mrs. Surratt, Dr. Mudd, and David Herold. There is no 24-hour hooded blindfold. He has even had some scant visitors: “Jail records show Cruz met with his brother twice last month, as well as with a family friend.”  Yet there is still, as in the case of the Lincoln suspects, a tight control on information which might originate from the accused. (Background: Finkelstein Is the Gatekeeper, Ersjdamoo’s Blog, March 12, 2018.)
David E. Herold, suspect in the Lincoln assassination plot, may have been “feeble minded.”  At his trial, Herold’s defense argued, in part, that David Herold “had always been a weak, simple-minded youth without much force of character – light and trifling.” One of the witnesses said Herold “was like a boy only eleven years of age.” 
In 2014, state investigators reported Nikolas Cruz had depression, autism, and attention deficit hyperactivity disorder. 
David Herold: “feeble minded.” Nikolas Cruz: autistic. This bears on how well Cruz understands what is now happening to him.
Late breaking is that a judge has ruled that surveillance video should be made public that shows events outside of the high school.  Two things: (1) if actually released, the video shows events outside the high school; video also exists of events inside the high school; (2) if actually released, media focus of the outdoor video will likely be on actions of the school resource officer and not on footage ostensibly showing the arrival of Nikolas Cruz via an Uber vehicle, and of Cruz carrying a rifle or what looks like a rifle in a case.
——- Sources ——-
 The Lincoln Conspiracy, by David Balsiger and Charles E. Sellier, Jr. Los Angeles: Schick Sunn Classic Books, 1977.
 “Fellow Inmate of Nikolas Cruz Says Parkland Shooting Suspect was ‘Lost in His Mind’”, WPTV. Posted 8:11 PM, March 11, 2018, by CNN Wire. http://fox40.com/2018/03/11/fellow-inmate-of-nikolas-cruz-says-parkland-shooting-suspect-was-lost-in-his-mind/
 “David Herold”, Wikipedia, March 11, 2018. https://en.wikipedia.org/wiki/David_Herold
 A True History of the Assassination of Abraham Lincoln and of the Conspiracy of 1865, by Louis J. Weichmann. New York: Knopf, 1975.
 “Stoneman Douglas High School shooting: Nikolas Cruz”, Wikipedia, March 7, 2018. https://en.wikipedia.org/wiki/Stoneman_Douglas_High_School_shooting#Nikolas_Cruz
 “The Latest: Judge: release Florida school shooting video”, March 12, 2018. https://www.seattlepi.com/news/education/article/The-Latest-Shooter-suspect-wants-medical-records-12747347.php