The disease is a serious concern for farmers and I do feel for those that have lost their herds.
But I don't think giving farmers a licence to shoot badgers will help.
What tends to happen when you cull animals in a specific area is that other animals then come in and colonise that area and the pertubation that follows makes it more difficult to control the spread of disease.
It also seems to me that the government is passing the buck onto individual farmers to solve what is a nationwide problem.