Yes. Certainly such people are the dregs of society. As he had been forsaken by both God and the government, you should instead consider your actions a service to him. I'm certain that this man wanted to die.

You aren't to blame for that. If you hadn't killed him, then another person would have. In fact, you're very kind, Miss!

[Her expression doesn't change at all, of course. This is just as natural a conversation as any.]