A group of men in green uniforms and women in loose black chador head scarfs roaming the streets in a van is a familiar sight in Iran. This is a patrol by Iran’s so-called morality police   Officially called the Guidance Patrol, officers have the power to arrest anyone deemed to be flouting the country’s strict rules on how men and women should dress and act in public.   While officially they police everyone - men wearing shorts or showing visible tattoos can fall foul of officers - it is women who are overwhelmingly scrutinised.   On this episode of Beyond the Headlines, host James Haines-Young looks at Iran’s religious rules and the force that upholds them.