@maxdancona,
No the question was about morals being relative. If morals are relative there is no good or evil. During the Holocaust it was that precise mentality that people used to convince themselves that the harm they caused was excused. Inflicting suffering, indulging in humiliating the helpless..etc. truth is self evident. So maybe you say it was due to their particular moral cultural evolution but this happened rapidly over an individual's lifetime. So maybe a person can feel like it is a relief of societal burden to kill a homeless person..he/she rationalizes it is also a way to give the homeless person a way of of misery. The problem here lies not only in lack of human empathy but in pride, conceit and being judge, jury and executioner. A certain arrogance, pride and selfishness in thinking ...to me is the definition of evil.