Better support for landlords

We previously had an incident at our pub where we refused to serve a number of customers after hours. One of these members then took it upon themselves to help themselves to a drink. Then come behind the bar and when asked to leave punched the landlady in the face breaking her nose. Her father also joined in with the abuse by throwing the pint which had been poured over the landlord shattering the glass and punching our son. Both parties have been let off with just a caution. If we had served after hours we would have been hit with a fine. They however have pretty much been told it's ok to break the law and cause injury in the meantime. Please join in with this petition to put a stop to such behaviour. Our jobs are hard enough as it is! We follow the licensing rules according to the law, so why doesn't the law then back us up?