If you're the kind of person who likes to smoke a joint and chat on your mobile while out for a relaxing Sunday afternoon drive it seems you're in luck. According to figures released this week it seems that the police are increasingly turning a blind eye to these offences and when it comes to enforcing the new law banning smoking in cars where there are children, the police have said it's not their job. If the purpose of the law is to protect public health and safety, and to set moral boundaries, can it ever be morally acceptable to ignore law breaking? Should the law be about defining what is right and wrong, good and bad in all circumstances? Or is it acceptable for a law to be a moral symbol of disapproval, with no real threat of enforcement? And if the police don't have a moral duty to enforce the law, what about us as citizens? From this week landlords will be breaking the law if they don't check their tenants have a right to live in the UK and teachers now have a legal duty to tackle extremism. In both cases it's no longer enough to define a good upright citizen as one who doesn't break the law; it's now about having a legal duty to enforce it too. The Moral Maze and the letter of the law.Combative, provocative and engaging debate chaired by Michael Buerk, with Giles Fraser, Michael Portillo, Claire Fox and Melanie Phillips. Witnesses are John Cooper, Luke Gittos, Professor John Tasioulas and Peter Garsden.