Ban the covering of the face in public places
If we are to have the prolifferation of CCTV etc then it should be an offense to mask your features in any way. You should always be identifiable in public with NO exceptions.
You should always be liable for your actions and this would include the veil, BP protestors hoods, G20 rioters face masks etc.
Why does this idea matter?
Either ban covering your face or ban CCTV. You cant have both.