Oh dear I am out ona limb again
This is to do with obedience to authority and whether it leads you to do narty narty things. We were only just all intensely discussing this in relation to superior orders and in the tube bombings being told to abandon the injured
yeah yeah cue thirty thousand Whaaaaa's ?
and here the idea very obvious to me is a group being directed even to cross lines ( here acting out a beheading ) and then discussing why they had behaved thus
cue Milgram experiments
https://en.wikipedia.org/wiki/Milgram_experiment
got people off the street in New York and told them the experiment involved them electrocuting transgressors
the idea was to question the refusers but they found questioning the obeyers much more interesting
Yup mIlgram
I feel sorry for all concerned
OK putting on the internet was crossing a line too far .....