Technically we would all be accomplices to murder (after all it is quite hard to find a not-Orient-Express scenario in which more than a couple of people kill a

Technically we would all be accomplices to murder (after all it is quite hard to find a not-Orient-Express scenario in which more than a couple of people kill another one), which does not usually get the death penalty, so paradox is avoided. I do agree with you, though :-)