There could certainly be many scenarios where killing somebody might make ethical sense - self defense, the "Trolley problem", etc. I meant to describe a situa

There could certainly be many scenarios where killing somebody might make ethical sense - self defense, the "Trolley problem", etc. I meant to describe a situation decidedly not of that nature. Imagine our friend wants to kill ten people for no remotely defensible reason. Perhaps our hypothetically murderous friend is high on hypothetical PCP and is clearly suffering some kind of psychotic breakdown.