To answer your question, there is no line other than those that we set for any media. Video games are just another in a long line of things people panic about. These things have included:
* Dancing
* Holding hands in public
* D&D
* Movies
* Radios
* Books
* Witches
* Homosexuality
* Girls playing Sports
* Women Voting
* Comic books
* Signing
* Christmas Celibrations (Both Direction too)
* Drinking
And So much more that it is impossible to create anything like a comprehensive list. The only things that they all have in common are that weather the item might or might not actually impact morality the people who were worried about them definately had negative effects on society and that most of them (not all) have become gernally accepted by the public within one or two generations of the big moral panic. Further, except for the ones that involve new technology they were all gernally accept before the moral panic.
The most morally and socially dangerious thing are people who worry about other people being moral rather than just themselves.
http://en.wikipedia.org/wiki/Moral_panic
*EDIT*
I also want to add that despite these moral panics continously going on as far back and recorded history, and the behaviors / items / etc almost universally becoming accepted as normal within a few generations (with some exceptions), the world has not yet come to a end. Amazingly allowing teens to dance, doesn't cause them to become social dropouts. Nor do people who play D&D Murder people.
Nor does there appear to be anything you can do to persuad people that being panic serves no useful purpose and usually only causes harm to people who have caused no harm to anyone else. It appears to be a design flaw in the human mind.
* Dancing
* Holding hands in public
* D&D
* Movies
* Radios
* Books
* Witches
* Homosexuality
* Girls playing Sports
* Women Voting
* Comic books
* Signing
* Christmas Celibrations (Both Direction too)
* Drinking
And So much more that it is impossible to create anything like a comprehensive list. The only things that they all have in common are that weather the item might or might not actually impact morality the people who were worried about them definately had negative effects on society and that most of them (not all) have become gernally accepted by the public within one or two generations of the big moral panic. Further, except for the ones that involve new technology they were all gernally accept before the moral panic.
The most morally and socially dangerious thing are people who worry about other people being moral rather than just themselves.
http://en.wikipedia.org/wiki/Moral_panic
*EDIT*
I also want to add that despite these moral panics continously going on as far back and recorded history, and the behaviors / items / etc almost universally becoming accepted as normal within a few generations (with some exceptions), the world has not yet come to a end. Amazingly allowing teens to dance, doesn't cause them to become social dropouts. Nor do people who play D&D Murder people.
Nor does there appear to be anything you can do to persuad people that being panic serves no useful purpose and usually only causes harm to people who have caused no harm to anyone else. It appears to be a design flaw in the human mind.