I'm a huge fan of abstract architecture shots or just architecture shots in general. I was talking some shots, from across the street of this beatiful building. Got some amazing photos, I'll post later. Anyways this guy comes up to me and says "Security would like to know what you are doing" I was not on their property. Do I have to anwser them or stop shooting? Can I be arrested. I felt angry and harrassed. Any advice in this situation? Am I in the wrong?