And don't forget the people working in Hollywood. If you're working as an extra for background actions, for the minimum wage already, and it takes you half the time to find jobs where you match the requirements, as well as extra money for costumes etc, then you're effectively working for half the minimum wage. Not to mention hour-long commute times!
I've recently visited LA for the first time, and participated as an unpaid extra (just for fun) in Ted 2 (just happened to be the movie available), also talked with the locals on the set who work as paid extras. I got the impression that overall they totally hate the unpaid ones, because that's further reinforcement for their minimum wages.