They are adult movies, and intended for mature audiences only. With the popular and conventionally handsome, Brad Pitt, in the lead, it is easy to understand the fears. It is very common for men to give into the baser instincts of violence. But he's only able to feel better about himself after unloading with violence. This is not merely the work of Hollywood fiction.
Many men do, in fact, only feel worthwhile when they are engaging in violence.
It is a rather primitive characteristic, but one which is not uncommon. In the past, hooligans have accounted for their actions by explaining that, for them, violence was an enriching experience. The Auteur filmmakers are personalities themselves. Just like the stars of the movies, the directors have a distinctive voice which shines through. Scorsese is renowned for his movies about the individual struggling in the modern world.