Deja Vu! More you do photography in public, more chances to meet idiots ("rude" is a very kind expression) like this...
In one wedding where I was the hired photographer, was the usual slide -show presentation when the "Pro" videographer start recording in front of me the slides with his videocamera, and he turned on the video-lights even!!! (yes, was a bit dark in the reception at that time!) I had to move away a few meters to be able to do my photography. Oh well...

Very nice detail and this makes a great documentary image. Some people are just rude.