Capital punishment by hanging is still practiced in a few Commonwealth countries, Singapore and Malaysia included. The gore and cruelty of execution by hanging have been shielded away from public's eye because few people can stomach the total loss of human dignity when a person is executed.
Judicial execution and public execution is essentially the same in terms of what prisoners go through psychologically.
In the video an unhooded woman and two men are draped with the noose and executed by suspension hanging. A suspension crane is lifted up where the ropes are tied to.
The woman appeared to struggle for a minute and then went limp, while the two men put up no sign of struggle and were presumed to be unconscious within seconds due to carotid sinus reflex where cardiac arrest occurs.
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Iran public hanging video (graphic: discretion is adviced)