You can find people with that mentality in any American city. Sociopaths are pretty evenly distributed across the human population. It's just that here the incentives are different. And there, money and connections are an absolute get out of jail free card.

That said, I'm surprised there isn't a greater culture of vengeance killings over issues like this.

... Committed with vehicles and which involve running the person over four times, making sure to get out of the vehicle to steer your car tire over their skull ...