Hello, earlier today I was flying at Boylan Bridge in Raleigh, NC. I had recorded a shot around Bloomsberry Estates, about 200 ft away from the building. And a couple minutes later, a person who lived in the apartment came up to me with very profound words, telling me that it's illegal to fly near a private building and threatened he would call the FCC on me. I asked him what I had done to disturb him, and he was concerned about me seeing into him daughters bedroom window. I asked if he would like to see the footage of the building and assured him, nothing can be seen through the windows. He then continued to threaten to shoot down my drone next time it comes near his apartment, or I come to this area. I apologized for flying to close to the building and redirected my drone shots toward the city. The police was called, and said I had done nothing wrong as I was following FAA rules. And apologized for the inconvenience. Sorry for the long post but is there anything I had done wrong, or perhaps a law by the FAA that does not allow me to fly near a private building?