Really, gamers and game executives should know what to expect when they go up against Fox News. If it was me, I would have prepared in advance by:
1) Digging up U.S. crime statistics (which point out that youth crime rates are dropping as a whole.)
2) Finding out the number of adolescent gamers in the U.S. (which is probably a large number) in order to make the point that not all of the million-or-so young gamers are crazed maniacs.
3) Memorizing the names of studies that refute the assessments that games are linked to violence.
4) Bringing up past forms of entertainment that were considered immoral/offensive for its time, but are now considered masterpieces (i.e. the ballet "Le Sacre du printemps").
I mean, these things probably won't let you win an argument against these buffoons, but at least you'll retain credibility and maybe influence a small percentage of people who watch Fox News.
On an unrelated note, it makes me truly sad that, even though most of the world knows that Fox News is a load of fecal matter, the channel is the most-watched news station in the U.S.