If he was using bird shot, like #8 or 7 1/2, that drone must have been pretty low. I'm not condoning his shooting it, but I can understand how riled folks can get when they think their daughter is the subject of young men spying. I think folks in general are just fed up with the lack of privacy and disrespect for their personal real property. This is just another case of the law not keeping up with the times. Also, as usual, the very small minority (in this case drone operators) are going to make it hard on the rest.IF it was really low, hovering and spying on my wife or daughter, I think a paintball gun might be the best way to take it out within city limits. Softball, rock, or hose would be the next best options, you do not discharge a gun in the city without your life being in danger, you are asking to get arrested. Period.
However, if it was just flying around taking pictures for fun and happened to hover for a while at a higher altitude might mean the operator is trying to get his bearings, plan the next photo run, or was talking to someone for a few minutes and had his attention diverted. No reason to over react and shoot it down with a shotgun. I am willing to bet this guy is not the best or friendliest neighbor either... he sounds like he is a little off the deep end to me.