According to the evidence we have, the sense of good and evil is related to genetics and the creature's perspective. A male lion will kill the lioness' cubs to make her fertile and produce the male lion's offspring. This is considered morally right by that species, and a genetic change can cause this morality to change. Now, genetic abnormalities can cause a difference in morality, and this could be the case for traffickers. That doesn't mean it's any less horrible for the victims, but unfortunately death and suffering are a part of life. It seems very beneficial for this society as a whole to try to put an end to human trafficking and we must wish the best for society