They had a bizarre case here in New Jersey several decades ago involving an urban mutant who tried to assault and rob a bus driver (in Jersey City, I think). Turns out the driver had been robbed several times before, and had armed himself -- with a hatchet.
Eyewitnesses on the street outside the bus reported that the bus came to a halt, the door opened, and the thug's lifeless body got dumped out by head-first -- with the hatchet still stuck in the skull -- by the driver who had clearly "gone rogue" by this point. Unfortunately (or fortunately), the thug's legs were still inside the bus when the driver closed the door, so when the bus pulled away and sped down the street several blocks of onlookers were treated to the sight of the spectacle.
I think the Jersey City bus system was crime-free for several months after that incident.
My kind of bus driver.