I would love to advise "shoot the (*&$#^#(*&@!%$@ back" but we all know you cannot do that. As previously mentioned by others, are we hearing all of the story?

Does your dog bark excessively? Has your dog attacked this person? It is hard to put ourselves in the other person's shoes sometimes. Maybe this person works nights and needs sleep during the day, is you dog bothering him? Maybe this person is just sick in the head, in this case good luck.

I hope that you can resolve the problem without violence. Call the police, the humane society, his Mom if you have to. No one should abuse our fine furry friends. I love my Labs like they were my kids. Good luck and I hope this person does not hurt your dog anymore.