15Glorification Of Violence
Video games have been notorious for making violence seem cartoonishly fun instead of handling it in a mature fashion. Some have attempted to try the latter, but most of the time studios decide to take the easy route and make violence an incentive for the player to give them the illusion
of being able to do whatever they want (when it honestly just boils down to killing lots of people in an uninspired sandbox).
The Grand Theft Auto series pretty much personifies why violence must have a limit that shouldn't be crossed. People are impressionable, and a game with such a wide reach depicting violence in such a casual manner is not something to be taken lightly.