This is an audio-only recording of Patti LuPone stopping "Rose's Turn" to read the riot act to some as$hole taking pictures from the audience during a performance of Gypsy:
http://www.youtube.com/watch?v=dw6-Tp4UVVA
While it is technically inappropriate for an actor to break character while on stage, I fully support Patti's actions. Theater-goers today have gotten completely out of control and do not comply with basic courtesies. (Don't get me started with people talking on cell phones during a performance!) Shaming them seems like the only course of action that will be effective.
What do you think?