As disturbing as this product is, it creates an interesting social experiment. Will it be used:
1.) by hateful people to let out their frustrations with the world so that they can function normally in public? Or;
2.) as a training simulation for people who actually intend to do things like this, but need some help actually visualizing the plan?
The difference between GTA and this is GTA isn't quite as realistic. No matter how much violence you commit in GTA, the world is so fictional and caricatured that it's far more likely to be used for (1) than for (2). Hatred, on the other hand, seems way too real. They lay out the motivation for violence, the tools, the strategy, and a rationalization of the end-game. And the victims beg for their lives. This makes me fear that this game is more likely to be used for (2) than for (1). But I could be wrong.