Bozo Erectus said:Human sacrfice would also be good then if the people being sacrificed believed it was good?
Self-sacrifice is one the "The Goods" that I mentioned earlier. The person being sacrificied would likely agree to be sacrificied if they believed that it was 'worth it'.
Throwing yourself on a grenade. Running back into a burning building. Charging a criminal to allow others to escape. Donating a kidney.
These are all actions which can be considered good, and they all can conceiviably lead to the martyr's death.