If you trick people into walking in front of a train or purposefully push them makes no difference to me I say they are all sociopaths because I don't like the word psychopaths and because it is close to psychosis. And, I married a clinical psychologist now turned cancer researcher, so... this is something I am trained now to say.
How would you classify the dentist that infected 30 people with HIV? Sociopath or psychopath?