In the film he cries out as he is whipped and is told: ‘You are from Towerga, you dog. You say you did nothing in Misrata, so why are you in disguise? We found weapons in every house in Towerga. Your hand is bleeding and we hope it is paralysed.’

The men chant as they reach for live electric wires: ‘Everyone we catch is innocent, they say.

‘Well, blood will come from your eyes and nose until you admit what you have done. We’ve caught 60 of you so far and none of you did anything.’

It is not clear when the footage was taken or what happened to Mr Gersh.