I'm sorry but a lot of people in this thread just don't get it.
I have been on both sides of the issue - a patron and an usher. Sure, maybe an usher who's trying to do their job is disturbing to you for a few seconds, but I can assure you that if they don't at least try to do their job, and just stand by and let those who feel like taking a picture go right ahead and do it, you will soon have 1500 paparazzi shooting away.
OK, and I have to explain why ushers sometimes get militant and lose it to the point of being really mean. I know lots of you won't accept what I'm going to say, but I'm saying it because it's true:
When you are fighting a losing battle each and every time you're at work, and you're ignored and/or abused over and over again, the frustration leads to anger, and you lose it. I've pleasantly reminded some patrons to please turn off their phones. The first time, ok, they quickly put the phones away. Then they take them right out again. The second time, I might say "I'm asking you again to put the phones away." They put them away after giving me a dirty look. Then they take them out again. This time I will SCOLD, yes scold. "PLEASE PUT THE PHONES AWAY!" Now, if you blame me for that, then go f**k yourself.
<-----I'M TOTES ROLLING MY EYES