"He's not sane," They'd say, after your conviction. "He shouldn't be there." The blood will never leave you, ingrained into your very being as much as your DNA. Their voices echo in your mind, demanding an answer for your actions. You can't take this much longer. Briefly, you consider ending it here, in front of them, the cosmic jury. You don't. Your goal is more important.
You have only killed 1 'person', but you may as well have killed everyone that crossed your path. You don't want to keep going.