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Thanks all. Whilst I am well aware from experience that women in Muslim families /communities are too often treated as second class citizens, I feel it would be unwise for the government to include tackling the oppression of women as an argument for banning the burka. That would be very dodgy ground.
The case has to be based on social interaction in our culture relying on eye contact and seeing facial expressions, and we need to be able to recognise people whether it be for bus passes, driving licences, selling petrol/ cigarettes, giving descriptions to police, picking children up from school, etc etc .