While the board is actually working, I'm going to throw some opinions into the mix:
1. When spouting stuff about sacrificing people for the greater good, try to remember that your loved ones might be the next sacrifices.
2. Sociopaths aren't Vulcans. They're manipulative, self-serving, dangerous to be around, and very rarely do more good than harm. Sure, it's technically not their fault, but that doesn't make them worthy of emulation.
3. Ordinary people can do just as much harm if they try, though, and one of the best ways of doing that is to rationalize away other people's humanity. Which is what "ends justify the means" thinking constitutes.
Also, this is totally me right now:
https://xkcd.com/386/