There is enough Clint Eastwood in us all to want to deal with this situation with a .44 Magnum, however I think it is obvious you were dealing with an idiot (or someone who is emotionally disturbed). It is a certainty if you argue with an idiot you will get an idiots answer ( he may also have all sorts of emotional problems that he would love to unload on you ). We have all been there and it satisfies me enough to know that there are enough of these people in the world that he will eventually run across one himself and the situation will handle itself. When you say your prayers tonight thank the Almighty you are not like this bonehead and then ask God to help him. ( you may want to turn your camera on in case he comes back and try's to hurt you. ) Good Luck