In this article by popular horror author Stephen King, he provides his $0.02 on the double standard of what's considered violent in video games compared to what's considered violent in movies. A sample from the article:

"What really makes me insane is how eager politicians are to use the pop culture as a whipping boy. It's easy for them, even sort of fun, because the pop-cult always hollers nice and loud. Also, it allows legislators to ignore the elephants in the living room."

Definitely worth a read.