SHOW US YOUR TROUSER LEG! -EXTREMISM THROUGH CLOTHING (From 2011)

Sounds bizarre, but the 'Dispatches' expose of Islamist tendencies in the classroom included the strictures that a beard and trousers above the ankles were de rigeur for the pious. Roll your trousers down and dire punishment would ensue.

Extremists bind their followers to them by separating them from ordinary behaviour. If you think that it's all right to be punished for having rolled down trousers, then you'll accept anything. Not as daft as it sounds, then.