If it turns out that videogames make only 1% of gamers more violent (especially lonely, bullied, socially dysfunctional ones), and end up being a decisively contributing factor in 50% of school shootings, should they be regulated?
Yes, the US may experience a higher level of mental disorder (the precautionary principle may turn out to be good for something), which increases the number of individuals that can be triggered to fully flip against humanity