A disturbing French TV documentary has tried to demonstrate how well-meaning people can be manipulated into becoming torturers or even executioners.
The hugely controversial Game of Death was broadcast in prime-time on a major terrestrial channel, France 2, on Wednesday.
It showed 80 people taking part in what they thought was a game show pilot.
As it was only a trial, they were told they wouldn't win anything, but they were given a nominal 40 euro fee.
Before the show, they signed contracts agreeing to inflict electric shocks on other contestants.
One by one, they were put in a studio resembling the sets of popular game shows.
They were then asked to zap a man they believed was another contestant whenever he failed to answer a question correctly - with increasingly powerful shocks of up to 380 volts.
Egged on by a glamorous presenter, cries of "punishment" from a studio audience and dramatic music, the overwhelming majority of the participants obeyed orders to continue delivering the shocks - despite the man's screams of agony and pleas for them to stop.
Eventually he fell silent, presumably because he had died or lost consciousness.
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