I do agree with some things in violent video games leaving an impression on much younger minds than intended by the game's rating. I also agree that games such as this should not be played by minors... unless their parents honestly think they're mature enough.
I started playing MA15+ games before I was 15, and it really hasn't influenced me. But, were I much younger, it definitely could have.
The blatant ignorance of those facts, however, sends the message that Fox News are a hopeless group, and so if someone knows these facts, I doubt they'll take Fox seriously.
Because, let's face it. A kid playing a violent game? At the end of the day, it's the parent's choice.